79519961492 has 6 divisors (see below), whose sum is σ = 139159932618. Its totient is φ = 39759980744.

The previous prime is 79519961471. The next prime is 79519961501. The reversal of 79519961492 is 29416991597.

It can be written as a sum of positive squares in only one way, i.e., 79516104196 + 3857296 = 281986^2 + 1964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9939995183 + ... + 9939995190.

It is an arithmetic number, because the mean of its divisors is an integer number (23193322103).

Almost surely, 2^79519961492 is an apocalyptic number.

It is an amenable number.

79519961492 is a deficient number, since it is larger than the sum of its proper divisors (59639971126).

79519961492 is a wasteful number, since it uses less digits than its factorization.

79519961492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19879990377 (or 19879990375 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 62.

The spelling of 79519961492 in words is "seventy-nine billion, five hundred nineteen million, nine hundred sixty-one thousand, four hundred ninety-two".