637011058961 has 2 divisors, whose sum is σ = 637011058962. Its totient is φ = 637011058960.

The previous prime is 637011058951. The next prime is 637011058997. The reversal of 637011058961 is 169850110736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635776590736 + 1234468225 = 797356^2 + 35135^2 .

It is a cyclic number.

It is not a de Polignac number, because 637011058961 - 2²² = 637006864657 is a prime.

It is a super-2 number, since 2×637011058961² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (637011058951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318505529480 + 318505529481.

It is an arithmetic number, because the mean of its divisors is an integer number (318505529481).

Almost surely, 2^637011058961 is an apocalyptic number.

It is an amenable number.

637011058961 is a deficient number, since it is larger than the sum of its proper divisors (1).

637011058961 is an equidigital number, since it uses as much as digits as its factorization.

637011058961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 637011058961 in words is "six hundred thirty-seven billion, eleven million, fifty-eight thousand, nine hundred sixty-one".