128890000264 has 32 divisors (see below), whose sum is σ = 253554128640. Its totient is φ = 61343726400.

The previous prime is 128890000259. The next prime is 128890000319. The reversal of 128890000264 is 462000098821.

It is a super-2 number, since 2×128890000264² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4244854 + ... + 4275109.

It is an arithmetic number, because the mean of its divisors is an integer number (7923566520).

Almost surely, 2^128890000264 is an apocalyptic number.

It is an amenable number.

128890000264 is a deficient number, since it is larger than the sum of its proper divisors (124664128376).

128890000264 is a wasteful number, since it uses less digits than its factorization.

128890000264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520061 (or 8520057 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 128890000264 in words is "one hundred twenty-eight billion, eight hundred ninety million, two hundred sixty-four", and thus it is an aban number.