79519922402 has 6 divisors (see below), whose sum is σ = 119280481803. Its totient is φ = 39759761802.

The previous prime is 79519922401. The next prime is 79519922411. The reversal of 79519922402 is 20422991597.

It can be written as a sum of positive squares in only one way, i.e., 39759961201 + 39759961201 = 199399^2 + 199399^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199399.

It is a super-3 number, since 3×79519922402³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79519922401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 299099 + ... + 498497.

Almost surely, 2^79519922402 is an apocalyptic number.

79519922402 is a deficient number, since it is larger than the sum of its proper divisors (39760559401).

79519922402 is an frugal number, since it uses more digits than its factorization.

79519922402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398800 (or 199401 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

Multiplying 79519922402 by its sum of digits (50), we get a square (3975996120100 = 1993990²).

The spelling of 79519922402 in words is "seventy-nine billion, five hundred nineteen million, nine hundred twenty-two thousand, four hundred two".