856597145496 has 32 divisors (see below), whose sum is σ = 2234601250560. Its totient is φ = 273117930272.

The previous prime is 856597145483. The next prime is 856597145497. The reversal of 856597145496 is 694541795658.

856597145496 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 856597145496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856597145497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775902660 + ... + 775903763.

It is an arithmetic number, because the mean of its divisors is an integer number (69831289080).

Almost surely, 2^856597145496 is an apocalyptic number.

It is an amenable number.

856597145496 is an abundant number, since it is smaller than the sum of its proper divisors (1378004105064).

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

856597145496 is a wasteful number, since it uses less digits than its factorization.

856597145496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551806455 (or 1551806451 counting only the distinct ones).

The product of its digits is 326592000, while the sum is 69.

The spelling of 856597145496 in words is "eight hundred fifty-six billion, five hundred ninety-seven million, one hundred forty-five thousand, four hundred ninety-six".