79556515151 has 4 divisors (see below), whose sum is σ = 79839634704. Its totient is φ = 79273395600.

The previous prime is 79556515121. The next prime is 79556515193. The reversal of 79556515151 is 15151565597.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15151565597 = 7 ⋅2164509371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79556515151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79556515151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79556515111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141559355 + ... + 141559916.

It is an arithmetic number, because the mean of its divisors is an integer number (19959908676).

Almost surely, 2^79556515151 is an apocalyptic number.

79556515151 is a deficient number, since it is larger than the sum of its proper divisors (283119553).

79556515151 is a wasteful number, since it uses less digits than its factorization.

79556515151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283119552.

The product of its digits is 1181250, while the sum is 50.

The spelling of 79556515151 in words is "seventy-nine billion, five hundred fifty-six million, five hundred fifteen thousand, one hundred fifty-one".