73457428931 has 2 divisors, whose sum is σ = 73457428932. Its totient is φ = 73457428930.

The previous prime is 73457428897. The next prime is 73457428963. The reversal of 73457428931 is 13982475437.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73457428931 is a prime.

It is a super-2 number, since 2×73457428931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73457478931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36728714465 + 36728714466.

It is an arithmetic number, because the mean of its divisors is an integer number (36728714466).

Almost surely, 2^73457428931 is an apocalyptic number.

73457428931 is a deficient number, since it is larger than the sum of its proper divisors (1).

73457428931 is an equidigital number, since it uses as much as digits as its factorization.

73457428931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The spelling of 73457428931 in words is "seventy-three billion, four hundred fifty-seven million, four hundred twenty-eight thousand, nine hundred thirty-one".