40131624977 has 2 divisors, whose sum is σ = 40131624978. Its totient is φ = 40131624976.

The previous prime is 40131624937. The next prime is 40131624983. The reversal of 40131624977 is 77942613104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36796446976 + 3335178001 = 191824^2 + 57751^2 .

It is a cyclic number.

It is not a de Polignac number, because 40131624977 - 2⁶ = 40131624913 is a prime.

It is a super-2 number, since 2×40131624977² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40131624937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065812488 + 20065812489.

It is an arithmetic number, because the mean of its divisors is an integer number (20065812489).

Almost surely, 2^40131624977 is an apocalyptic number.

It is an amenable number.

40131624977 is a deficient number, since it is larger than the sum of its proper divisors (1).

40131624977 is an equidigital number, since it uses as much as digits as its factorization.

40131624977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 40131624977 in words is "forty billion, one hundred thirty-one million, six hundred twenty-four thousand, nine hundred seventy-seven".