70730099581 has 12 divisors (see below), whose sum is σ = 77166133588. Its totient is φ = 64770319872.

The previous prime is 70730099497. The next prime is 70730099597. The reversal of 70730099581 is 18599003707.

It can be written as a sum of positive squares in 6 ways, for example, as 8474859481 + 62255240100 = 92059^2 + 249510^2 .

It is not a de Polignac number, because 70730099581 - 2²³ = 70721710973 is a prime.

It is a super-2 number, since 2×70730099581² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70730099281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3296616 + ... + 3318001.

Almost surely, 2^70730099581 is an apocalyptic number.

It is an amenable number.

70730099581 is a deficient number, since it is larger than the sum of its proper divisors (6436034007).

70730099581 is a wasteful number, since it uses less digits than its factorization.

70730099581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6614688 (or 6614671 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 70730099581 in words is "seventy billion, seven hundred thirty million, ninety-nine thousand, five hundred eighty-one".