862661956528 has 20 divisors (see below), whose sum is σ = 1671757136608. Its totient is φ = 431240760000.

The previous prime is 862661956489. The next prime is 862661956529. The reversal of 862661956528 is 825659166268.

It is a self number, because there is not a number n which added to its sum of digits gives 862661956528.

It is not an unprimeable number, because it can be changed into a prime (862661956529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5559723 + ... + 5712778.

Almost surely, 2^862661956528 is an apocalyptic number.

It is an amenable number.

862661956528 is a deficient number, since it is larger than the sum of its proper divisors (809095180080).

862661956528 is a wasteful number, since it uses less digits than its factorization.

862661956528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11277292 (or 11277286 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 64.

The spelling of 862661956528 in words is "eight hundred sixty-two billion, six hundred sixty-one million, nine hundred fifty-six thousand, five hundred twenty-eight".