70726901931 has 48 divisors (see below), whose sum is σ = 118021026240. Its totient is φ = 39978731520.

The previous prime is 70726901909. The next prime is 70726901933. The reversal of 70726901931 is 13910962707.

It is not a de Polignac number, because 70726901931 - 2²⁵ = 70693347499 is a prime.

It is a super-2 number, since 2×70726901931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70726901933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3699465 + ... + 3718533.

It is an arithmetic number, because the mean of its divisors is an integer number (2458771380).

Almost surely, 2^70726901931 is an apocalyptic number.

70726901931 is a deficient number, since it is larger than the sum of its proper divisors (47294124309).

70726901931 is a wasteful number, since it uses less digits than its factorization.

70726901931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19716 (or 19713 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The spelling of 70726901931 in words is "seventy billion, seven hundred twenty-six million, nine hundred one thousand, nine hundred thirty-one".