73126570427 has 2 divisors, whose sum is σ = 73126570428. Its totient is φ = 73126570426.

The previous prime is 73126570379. The next prime is 73126570477. The reversal of 73126570427 is 72407562137.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73126570427 - 2³⁴ = 55946701243 is a prime.

It is a super-3 number, since 3×73126570427³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (73126570477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36563285213 + 36563285214.

It is an arithmetic number, because the mean of its divisors is an integer number (36563285214).

Almost surely, 2^73126570427 is an apocalyptic number.

73126570427 is a deficient number, since it is larger than the sum of its proper divisors (1).

73126570427 is an equidigital number, since it uses as much as digits as its factorization.

73126570427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 73126570427 in words is "seventy-three billion, one hundred twenty-six million, five hundred seventy thousand, four hundred twenty-seven".