21575475704 has 16 divisors (see below), whose sum is σ = 40483761120. Its totient is φ = 10779806080.

The previous prime is 21575475667. The next prime is 21575475721. The reversal of 21575475704 is 40757457512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979904 + ... + 1001679.

It is an arithmetic number, because the mean of its divisors is an integer number (2530235070).

Almost surely, 2^21575475704 is an apocalyptic number.

It is an amenable number.

21575475704 is a deficient number, since it is larger than the sum of its proper divisors (18908285416).

21575475704 is a wasteful number, since it uses less digits than its factorization.

21575475704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982950 (or 1982946 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 47.

The spelling of 21575475704 in words is "twenty-one billion, five hundred seventy-five million, four hundred seventy-five thousand, seven hundred four".