143864519946 has 128 divisors (see below), whose sum is σ = 346491371520. Its totient is φ = 38957068800.

The previous prime is 143864519917. The next prime is 143864519969. The reversal of 143864519946 is 649915468341.

It is a self number, because there is not a number n which added to its sum of digits gives 143864519946.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21275206 + ... + 21281966.

It is an arithmetic number, because the mean of its divisors is an integer number (2706963840).

Almost surely, 2^143864519946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143864519946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173245685760).

143864519946 is an abundant number, since it is smaller than the sum of its proper divisors (202626851574).

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

143864519946 is a wasteful number, since it uses less digits than its factorization.

143864519946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140.

The product of its digits is 22394880, while the sum is 60.

The spelling of 143864519946 in words is "one hundred forty-three billion, eight hundred sixty-four million, five hundred nineteen thousand, nine hundred forty-six".