73311739157 has 2 divisors, whose sum is σ = 73311739158. Its totient is φ = 73311739156.

The previous prime is 73311739147. The next prime is 73311739201. The reversal of 73311739157 is 75193711337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69836518756 + 3475220401 = 264266^2 + 58951^2 .

It is a cyclic number.

It is not a de Polignac number, because 73311739157 - 2²² = 73307544853 is a prime.

It is a super-2 number, since 2×73311739157² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73311739117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36655869578 + 36655869579.

It is an arithmetic number, because the mean of its divisors is an integer number (36655869579).

Almost surely, 2^73311739157 is an apocalyptic number.

It is an amenable number.

73311739157 is a deficient number, since it is larger than the sum of its proper divisors (1).

73311739157 is an equidigital number, since it uses as much as digits as its factorization.

73311739157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416745, while the sum is 47.

The spelling of 73311739157 in words is "seventy-three billion, three hundred eleven million, seven hundred thirty-nine thousand, one hundred fifty-seven".