40902531473 has 2 divisors, whose sum is σ = 40902531474. Its totient is φ = 40902531472.

The previous prime is 40902531431. The next prime is 40902531491. The reversal of 40902531473 is 37413520904.

40902531473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38530549264 + 2371982209 = 196292^2 + 48703^2 .

It is a cyclic number.

It is not a de Polignac number, because 40902531473 - 2⁸ = 40902531217 is a prime.

It is not a weakly prime, because it can be changed into another prime (40902533473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20451265736 + 20451265737.

It is an arithmetic number, because the mean of its divisors is an integer number (20451265737).

Almost surely, 2^40902531473 is an apocalyptic number.

It is an amenable number.

40902531473 is a deficient number, since it is larger than the sum of its proper divisors (1).

40902531473 is an equidigital number, since it uses as much as digits as its factorization.

40902531473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 40902531473 in words is "forty billion, nine hundred two million, five hundred thirty-one thousand, four hundred seventy-three".