40590813961 has 2 divisors, whose sum is σ = 40590813962. Its totient is φ = 40590813960.

The previous prime is 40590813943. The next prime is 40590813983. The reversal of 40590813961 is 16931809504.

40590813961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40458908736 + 131905225 = 201144^2 + 11485^2 .

It is a cyclic number.

It is not a de Polignac number, because 40590813961 - 2⁷ = 40590813833 is a prime.

It is a super-2 number, since 2×40590813961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40590813941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20295406980 + 20295406981.

It is an arithmetic number, because the mean of its divisors is an integer number (20295406981).

Almost surely, 2^40590813961 is an apocalyptic number.

It is an amenable number.

40590813961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40590813961 is an equidigital number, since it uses as much as digits as its factorization.

40590813961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 40590813961 in words is "forty billion, five hundred ninety million, eight hundred thirteen thousand, nine hundred sixty-one".