79066987521 has 8 divisors (see below), whose sum is σ = 105541506624. Its totient is φ = 52651896720.

The previous prime is 79066987501. The next prime is 79066987541. The reversal of 79066987521 is 12578966097.

It is an interprime number because it is at equal distance from previous prime (79066987501) and next prime (79066987541).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79066987521 - 2¹⁵ = 79066954753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79066987501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14853970 + ... + 14859291.

It is an arithmetic number, because the mean of its divisors is an integer number (13192688328).

Almost surely, 2^79066987521 is an apocalyptic number.

It is an amenable number.

79066987521 is a deficient number, since it is larger than the sum of its proper divisors (26474519103).

79066987521 is a wasteful number, since it uses less digits than its factorization.

79066987521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29714151.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 79066987521 in words is "seventy-nine billion, sixty-six million, nine hundred eighty-seven thousand, five hundred twenty-one".