21507470375276 has 12 divisors (see below), whose sum is σ = 37639655486160. Its totient is φ = 10753283093520.

The previous prime is 21507470375273. The next prime is 21507470375333. The reversal of 21507470375276 is 67257307470512.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21507470375273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112916480 + ... + 113106791.

It is an arithmetic number, because the mean of its divisors is an integer number (3136637957180).

Almost surely, 2^{21507470375276} is an apocalyptic number.

It is an amenable number.

21507470375276 is a deficient number, since it is larger than the sum of its proper divisors (16132185110884).

21507470375276 is a wasteful number, since it uses less digits than its factorization.

21507470375276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226047064 (or 226047062 counting only the distinct ones).

The product of its (nonzero) digits is 17287200, while the sum is 56.

The spelling of 21507470375276 in words is "twenty-one trillion, five hundred seven billion, four hundred seventy million, three hundred seventy-five thousand, two hundred seventy-six".