156320493868 has 72 divisors (see below), whose sum is σ = 344506673952. Its totient is φ = 60751680000.

The previous prime is 156320493863. The next prime is 156320494003. The reversal of 156320493868 is 868394023651.

It is not an unprimeable number, because it can be changed into a prime (156320493863) 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, 1301058 + ... + 1416118.

It is an arithmetic number, because the mean of its divisors is an integer number (4784814916).

Almost surely, 2^156320493868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156320493868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172253336976).

156320493868 is an abundant number, since it is smaller than the sum of its proper divisors (188186180084).

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

156320493868 is a wasteful number, since it uses less digits than its factorization.

156320493868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115495 (or 115482 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 156320493868 in words is "one hundred fifty-six billion, three hundred twenty million, four hundred ninety-three thousand, eight hundred sixty-eight".