96730139521 has 4 divisors (see below), whose sum is σ = 96730764372. Its totient is φ = 96729514672.

The previous prime is 96730139509. The next prime is 96730139551. The reversal of 96730139521 is 12593103769.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12593103769 = 167 ⋅75407807.

It can be written as a sum of positive squares in 2 ways, for example, as 11372089600 + 85358049921 = 106640^2 + 292161^2 .

It is a cyclic number.

It is not a de Polignac number, because 96730139521 - 2²³ = 96721750913 is a prime.

It is a super-2 number, since 2×96730139521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96730139551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111735 + ... + 453811.

It is an arithmetic number, because the mean of its divisors is an integer number (24182691093).

Almost surely, 2^96730139521 is an apocalyptic number.

It is an amenable number.

96730139521 is a deficient number, since it is larger than the sum of its proper divisors (624851).

96730139521 is a wasteful number, since it uses less digits than its factorization.

96730139521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624850.

The product of its (nonzero) digits is 306180, while the sum is 46.

The spelling of 96730139521 in words is "ninety-six billion, seven hundred thirty million, one hundred thirty-nine thousand, five hundred twenty-one".