70715258531 has 2 divisors, whose sum is σ = 70715258532. Its totient is φ = 70715258530.

The previous prime is 70715258519. The next prime is 70715258591. The reversal of 70715258531 is 13585251707.

It is a weak prime.

It is an emirp because it is prime and its reverse (13585251707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70715258531 - 2²² = 70711064227 is a prime.

It is a super-2 number, since 2×70715258531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70715258591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35357629265 + 35357629266.

It is an arithmetic number, because the mean of its divisors is an integer number (35357629266).

Almost surely, 2^70715258531 is an apocalyptic number.

70715258531 is a deficient number, since it is larger than the sum of its proper divisors (1).

70715258531 is an equidigital number, since it uses as much as digits as its factorization.

70715258531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 70715258531 in words is "seventy billion, seven hundred fifteen million, two hundred fifty-eight thousand, five hundred thirty-one".