864487665153 has 12 divisors (see below), whose sum is σ = 1427090748928. Its totient is φ = 493992951480.

The previous prime is 864487665131. The next prime is 864487665161. The reversal of 864487665153 is 351566784468.

864487665153 is a `hidden beast` number, since 8 + 6 + 4 + 48 + 76 + 6 + 515 + 3 = 666.

864487665153 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 not a de Polignac number, because 864487665153 - 2⁵ = 864487665121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 13722026431 = 864487665153 / (8 + 6 + 4 + 4 + 8 + 7 + 6 + 6 + 5 + 1 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864487665163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6861013153 + ... + 6861013278.

Almost surely, 2^864487665153 is an apocalyptic number.

It is an amenable number.

864487665153 is a deficient number, since it is larger than the sum of its proper divisors (562603083775).

864487665153 is a wasteful number, since it uses less digits than its factorization.

864487665153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13722026444 (or 13722026441 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 864487665153 in words is "eight hundred sixty-four billion, four hundred eighty-seven million, six hundred sixty-five thousand, one hundred fifty-three".