40520594957 has 2 divisors, whose sum is σ = 40520594958. Its totient is φ = 40520594956.

The previous prime is 40520594927. The next prime is 40520594971. The reversal of 40520594957 is 75949502504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40516053796 + 4541161 = 201286^2 + 2131^2 .

It is a cyclic number.

It is not a de Polignac number, because 40520594957 - 2¹² = 40520590861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40520594927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20260297478 + 20260297479.

It is an arithmetic number, because the mean of its divisors is an integer number (20260297479).

Almost surely, 2^40520594957 is an apocalyptic number.

It is an amenable number.

40520594957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40520594957 is an equidigital number, since it uses as much as digits as its factorization.

40520594957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 40520594957 in words is "forty billion, five hundred twenty million, five hundred ninety-four thousand, nine hundred fifty-seven".