79445540311 has 4 divisors (see below), whose sum is σ = 80631294712. Its totient is φ = 78259785912.

The previous prime is 79445540303. The next prime is 79445540341. The reversal of 79445540311 is 11304554497.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79445540311 - 2³ = 79445540303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79445540341) 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, 592877100 + ... + 592877233.

It is an arithmetic number, because the mean of its divisors is an integer number (20157823678).

Almost surely, 2^79445540311 is an apocalyptic number.

79445540311 is a deficient number, since it is larger than the sum of its proper divisors (1185754401).

79445540311 is a wasteful number, since it uses less digits than its factorization.

79445540311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185754400.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 79445540311 in words is "seventy-nine billion, four hundred forty-five million, five hundred forty thousand, three hundred eleven".