864998135028 has 48 divisors (see below), whose sum is σ = 2243121491520. Its totient is φ = 288264088800.

The previous prime is 864998135009. The next prime is 864998135051. The reversal of 864998135028 is 820531899468.

864998135028 is a `hidden beast` number, since 8 + 6 + 49 + 9 + 81 + 3 + 502 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 496203 + ... + 1405778.

It is an arithmetic number, because the mean of its divisors is an integer number (46731697740).

Almost surely, 2^864998135028 is an apocalyptic number.

It is an amenable number.

864998135028 is an abundant number, since it is smaller than the sum of its proper divisors (1378123356492).

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

864998135028 is a wasteful number, since it uses less digits than its factorization.

864998135028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906205 (or 1906197 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 864998135028 in words is "eight hundred sixty-four billion, nine hundred ninety-eight million, one hundred thirty-five thousand, twenty-eight".