143311471616 has 88 divisors (see below), whose sum is σ = 288226852440. Its totient is φ = 71221248000.

The previous prime is 143311471579. The next prime is 143311471621. The reversal of 143311471616 is 616174113341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23318511616 + 119992960000 = 152704^2 + 346400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 143311471616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172872290 + ... + 172873118.

Almost surely, 2^143311471616 is an apocalyptic number.

143311471616 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 143311471616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144113426220).

143311471616 is an abundant number, since it is smaller than the sum of its proper divisors (144915380824).

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

143311471616 is an equidigital number, since it uses as much as digits as its factorization.

143311471616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1653 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

Adding to 143311471616 its reverse (616174113341), we get a palindrome (759485584957).

The spelling of 143311471616 in words is "one hundred forty-three billion, three hundred eleven million, four hundred seventy-one thousand, six hundred sixteen".