40568590961 has 2 divisors, whose sum is σ = 40568590962. Its totient is φ = 40568590960.

The previous prime is 40568590903. The next prime is 40568591023. The reversal of 40568590961 is 16909586504.

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., 39419719936 + 1148871025 = 198544^2 + 33895^2 .

It is a cyclic number.

It is not a de Polignac number, because 40568590961 - 2¹⁴ = 40568574577 is a prime.

It is not a weakly prime, because it can be changed into another prime (40568590901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20284295480 + 20284295481.

It is an arithmetic number, because the mean of its divisors is an integer number (20284295481).

Almost surely, 2^40568590961 is an apocalyptic number.

It is an amenable number.

40568590961 is a deficient number, since it is larger than the sum of its proper divisors (1).

40568590961 is an equidigital number, since it uses as much as digits as its factorization.

40568590961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 40568590961 in words is "forty billion, five hundred sixty-eight million, five hundred ninety thousand, nine hundred sixty-one".