40513634537 has 2 divisors, whose sum is σ = 40513634538. Its totient is φ = 40513634536.

The previous prime is 40513634467. The next prime is 40513634561. The reversal of 40513634537 is 73543631504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26242704016 + 14270930521 = 161996^2 + 119461^2 .

It is a cyclic number.

It is not a de Polignac number, because 40513634537 - 2²⁰ = 40512585961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40513634494 and 40513634503.

It is not a weakly prime, because it can be changed into another prime (40513634597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256817268 + 20256817269.

It is an arithmetic number, because the mean of its divisors is an integer number (20256817269).

Almost surely, 2^40513634537 is an apocalyptic number.

It is an amenable number.

40513634537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40513634537 is an equidigital number, since it uses as much as digits as its factorization.

40513634537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 41.

The spelling of 40513634537 in words is "forty billion, five hundred thirteen million, six hundred thirty-four thousand, five hundred thirty-seven".