73125620137 has 2 divisors, whose sum is σ = 73125620138. Its totient is φ = 73125620136.

The previous prime is 73125620063. The next prime is 73125620201. The reversal of 73125620137 is 73102652137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53261254656 + 19864365481 = 230784^2 + 140941^2 .

It is a cyclic number.

It is not a de Polignac number, because 73125620137 - 2¹¹ = 73125618089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73125620096 and 73125620105.

It is not a weakly prime, because it can be changed into another prime (73125720137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36562810068 + 36562810069.

It is an arithmetic number, because the mean of its divisors is an integer number (36562810069).

Almost surely, 2^73125620137 is an apocalyptic number.

It is an amenable number.

73125620137 is a deficient number, since it is larger than the sum of its proper divisors (1).

73125620137 is an equidigital number, since it uses as much as digits as its factorization.

73125620137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 73125620137 in words is "seventy-three billion, one hundred twenty-five million, six hundred twenty thousand, one hundred thirty-seven".