47470753521 has 24 divisors (see below), whose sum is σ = 68890164200. Its totient is φ = 31499020800.

The previous prime is 47470753411. The next prime is 47470753523. The reversal of 47470753521 is 12535707474.

47470753521 is a `hidden beast` number, since 4 + 7 + 4 + 70 + 7 + 53 + 521 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24794911296 + 22675842225 = 157464^2 + 150585^2 .

It is not a de Polignac number, because 47470753521 - 2²¹ = 47468656369 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47470753523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5072955 + ... + 5082303.

Almost surely, 2^47470753521 is an apocalyptic number.

It is an amenable number.

47470753521 is a deficient number, since it is larger than the sum of its proper divisors (21419410679).

47470753521 is a wasteful number, since it uses less digits than its factorization.

47470753521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11937 (or 11934 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 47470753521 in words is "forty-seven billion, four hundred seventy million, seven hundred fifty-three thousand, five hundred twenty-one".