73936497491057 has 2 divisors, whose sum is σ = 73936497491058. Its totient is φ = 73936497491056.

The previous prime is 73936497491023. The next prime is 73936497491119. The reversal of 73936497491057 is 75019479463937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48375697309696 + 25560800181361 = 6955264^2 + 5055769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73936497491057 is a prime.

It is a super-2 number, since 2×73936497491057² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73936497493057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36968248745528 + 36968248745529.

It is an arithmetic number, because the mean of its divisors is an integer number (36968248745529).

Almost surely, 2^{73936497491057} is an apocalyptic number.

It is an amenable number.

73936497491057 is a deficient number, since it is larger than the sum of its proper divisors (1).

73936497491057 is an equidigital number, since it uses as much as digits as its factorization.

73936497491057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080203040, while the sum is 74.

The spelling of 73936497491057 in words is "seventy-three trillion, nine hundred thirty-six billion, four hundred ninety-seven million, four hundred ninety-one thousand, fifty-seven".