47616957281 has 2 divisors, whose sum is σ = 47616957282. Its totient is φ = 47616957280.

The previous prime is 47616957251. The next prime is 47616957359. The reversal of 47616957281 is 18275961674.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31867962256 + 15748995025 = 178516^2 + 125495^2 .

It is a cyclic number.

It is not a de Polignac number, because 47616957281 - 2¹⁴ = 47616940897 is a prime.

It is a super-2 number, since 2×47616957281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47616957251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23808478640 + 23808478641.

It is an arithmetic number, because the mean of its divisors is an integer number (23808478641).

Almost surely, 2^47616957281 is an apocalyptic number.

It is an amenable number.

47616957281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47616957281 is an equidigital number, since it uses as much as digits as its factorization.

47616957281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 56.

The spelling of 47616957281 in words is "forty-seven billion, six hundred sixteen million, nine hundred fifty-seven thousand, two hundred eighty-one".