47521693957 has 8 divisors (see below), whose sum is σ = 48212155584. Its totient is φ = 46832299488.

The previous prime is 47521693951. The next prime is 47521693969. The reversal of 47521693957 is 75939612574.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47521693957 is a prime.

It is a super-2 number, since 2×47521693957² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47521693951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176863 + ... + 355420.

It is an arithmetic number, because the mean of its divisors is an integer number (6026519448).

Almost surely, 2^47521693957 is an apocalyptic number.

It is an amenable number.

47521693957 is a deficient number, since it is larger than the sum of its proper divisors (690461627).

47521693957 is a wasteful number, since it uses less digits than its factorization.

47521693957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533579.

The product of its digits is 14288400, while the sum is 58.

The spelling of 47521693957 in words is "forty-seven billion, five hundred twenty-one million, six hundred ninety-three thousand, nine hundred fifty-seven".