79463333981 has 4 divisors (see below), whose sum is σ = 79487107392. Its totient is φ = 79439560572.

The previous prime is 79463333959. The next prime is 79463333987. The reversal of 79463333981 is 18933336497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79463333981 - 2¹⁸ = 79463071837 is a prime.

It is a super-2 number, since 2×79463333981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79463333987) 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, 11881691 + ... + 11888376.

It is an arithmetic number, because the mean of its divisors is an integer number (19871776848).

Almost surely, 2^79463333981 is an apocalyptic number.

It is an amenable number.

79463333981 is a deficient number, since it is larger than the sum of its proper divisors (23773411).

79463333981 is a wasteful number, since it uses less digits than its factorization.

79463333981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23773410.

The product of its digits is 8817984, while the sum is 56.

The spelling of 79463333981 in words is "seventy-nine billion, four hundred sixty-three million, three hundred thirty-three thousand, nine hundred eighty-one".