79761500405 has 16 divisors (see below), whose sum is σ = 101552175360. Its totient is φ = 59932369152.

The previous prime is 79761500393. The next prime is 79761500419. The reversal of 79761500405 is 50400516797.

It is a cyclic number.

It is not a de Polignac number, because 79761500405 - 2¹⁸ = 79761238261 is a prime.

It is a super-3 number, since 3×79761500405³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 922025 + ... + 1004814.

It is an arithmetic number, because the mean of its divisors is an integer number (6347010960).

Almost surely, 2^79761500405 is an apocalyptic number.

It is an amenable number.

79761500405 is a deficient number, since it is larger than the sum of its proper divisors (21790674955).

79761500405 is a wasteful number, since it uses less digits than its factorization.

79761500405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927348.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 79761500405 in words is "seventy-nine billion, seven hundred sixty-one million, five hundred thousand, four hundred five".