47775904931 has 2 divisors, whose sum is σ = 47775904932. Its totient is φ = 47775904930.

The previous prime is 47775904927. The next prime is 47775904997. The reversal of 47775904931 is 13940957774.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47775904931 - 2² = 47775904927 is a prime.

It is a super-2 number, since 2×47775904931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47775904031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23887952465 + 23887952466.

It is an arithmetic number, because the mean of its divisors is an integer number (23887952466).

Almost surely, 2^47775904931 is an apocalyptic number.

47775904931 is a deficient number, since it is larger than the sum of its proper divisors (1).

47775904931 is an equidigital number, since it uses as much as digits as its factorization.

47775904931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 47775904931 in words is "forty-seven billion, seven hundred seventy-five million, nine hundred four thousand, nine hundred thirty-one".