156438350532 has 72 divisors (see below), whose sum is σ = 400601064864. Its totient is φ = 51466962816.

The previous prime is 156438350531. The next prime is 156438350533. The reversal of 156438350532 is 235053834651.

156438350532 is a `hidden beast` number, since 1 + 5 + 64 + 3 + 8 + 3 + 50 + 532 = 666.

It is an interprime number because it is at equal distance from previous prime (156438350531) and next prime (156438350533).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (156438350531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3061263 + ... + 3111945.

Almost surely, 2^156438350532 is an apocalyptic number.

156438350532 is a gapful number since it is divisible by the number (12) 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 156438350532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200300532432).

156438350532 is an abundant number, since it is smaller than the sum of its proper divisors (244162714332).

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

156438350532 is a wasteful number, since it uses less digits than its factorization.

156438350532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51809 (or 51804 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 156438350532 in words is "one hundred fifty-six billion, four hundred thirty-eight million, three hundred fifty thousand, five hundred thirty-two".