73126570129 has 2 divisors, whose sum is σ = 73126570130. Its totient is φ = 73126570128.

The previous prime is 73126570117. The next prime is 73126570151. The reversal of 73126570129 is 92107562137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71635451904 + 1491118225 = 267648^2 + 38615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73126570129 is a prime.

It is not a weakly prime, because it can be changed into another prime (73126579129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36563285064 + 36563285065.

It is an arithmetic number, because the mean of its divisors is an integer number (36563285065).

Almost surely, 2^73126570129 is an apocalyptic number.

It is an amenable number.

73126570129 is a deficient number, since it is larger than the sum of its proper divisors (1).

73126570129 is an equidigital number, since it uses as much as digits as its factorization.

73126570129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 73126570129 in words is "seventy-three billion, one hundred twenty-six million, five hundred seventy thousand, one hundred twenty-nine".