40973312537 has 2 divisors, whose sum is σ = 40973312538. Its totient is φ = 40973312536.

The previous prime is 40973312531. The next prime is 40973312617. The reversal of 40973312537 is 73521337904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24786094096 + 16187218441 = 157436^2 + 127229^2 .

It is a cyclic number.

It is not a de Polignac number, because 40973312537 - 2⁴ = 40973312521 is a prime.

It is not a weakly prime, because it can be changed into another prime (40973312531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20486656268 + 20486656269.

It is an arithmetic number, because the mean of its divisors is an integer number (20486656269).

Almost surely, 2^40973312537 is an apocalyptic number.

It is an amenable number.

40973312537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40973312537 is an equidigital number, since it uses as much as digits as its factorization.

40973312537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 40973312537 in words is "forty billion, nine hundred seventy-three million, three hundred twelve thousand, five hundred thirty-seven".