2129557064832 has 48 divisors (see below), whose sum is σ = 6128022286230. Its totient is φ = 709852354560.

The previous prime is 2129557064809. The next prime is 2129557064849. The reversal of 2129557064832 is 2384607559212.

2129557064832 is a `hidden beast` number, since 2 + 1 + 2 + 9 + 5 + 570 + 64 + 8 + 3 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1344802038336 + 784755026496 = 1159656^2 + 885864^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 924285769 + ... + 924288072.

It is a 1-persistent number, because it is pandigital, but 2⋅2129557064832 = 4259114129664 is not.

Almost surely, 2^{2129557064832} is an apocalyptic number.

It is an amenable number.

2129557064832 is an abundant number, since it is smaller than the sum of its proper divisors (3998465221398).

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

2129557064832 is a wasteful number, since it uses less digits than its factorization.

2129557064832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848573861 (or 1848573846 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 2129557064832 in words is "two trillion, one hundred twenty-nine billion, five hundred fifty-seven million, sixty-four thousand, eight hundred thirty-two".