156897341440 has 156 divisors (see below), whose sum is σ = 437981092056. Its totient is φ = 53793030144.

The previous prime is 156897341431. The next prime is 156897341483. The reversal of 156897341440 is 44143798651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 925347 + ... + 1081693.

Almost surely, 2^156897341440 is an apocalyptic number.

156897341440 is a gapful number since it is divisible by the number (10) 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 156897341440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218990546028).

156897341440 is an abundant number, since it is smaller than the sum of its proper divisors (281083750616).

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

156897341440 is an equidigital number, since it uses as much as digits as its factorization.

156897341440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156390 (or 156361 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 156897341440 in words is "one hundred fifty-six billion, eight hundred ninety-seven million, three hundred forty-one thousand, four hundred forty".