143561535056 has 120 divisors (see below), whose sum is σ = 299672668680. Its totient is φ = 66570882048.

The previous prime is 143561535049. The next prime is 143561535101. The reversal of 143561535056 is 650535165341.

It is a happy number.

143561535056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 98709072400 + 44852462656 = 314180^2 + 211784^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 143561534998 and 143561535016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116811050 + ... + 116812278.

It is an arithmetic number, because the mean of its divisors is an integer number (2497272239).

Almost surely, 2^143561535056 is an apocalyptic number.

143561535056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143561535056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149836334340).

143561535056 is an abundant number, since it is smaller than the sum of its proper divisors (156111133624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143561535056 is a wasteful number, since it uses less digits than its factorization.

143561535056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 143561535056 in words is "one hundred forty-three billion, five hundred sixty-one million, five hundred thirty-five thousand, fifty-six".