856708007632 has 20 divisors (see below), whose sum is σ = 1660395977856. Its totient is φ = 428218723040.

The previous prime is 856708007621. The next prime is 856708007633. The reversal of 856708007632 is 236700807658.

It is a super-2 number, since 2×856708007632² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 856708007632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856708007633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8402794 + ... + 8504137.

Almost surely, 2^856708007632 is an apocalyptic number.

It is an amenable number.

856708007632 is a deficient number, since it is larger than the sum of its proper divisors (803687970224).

856708007632 is a wasteful number, since it uses less digits than its factorization.

856708007632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16910106 (or 16910100 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 856708007632 in words is "eight hundred fifty-six billion, seven hundred eight million, seven thousand, six hundred thirty-two".