79944809522 has 6 divisors (see below), whose sum is σ = 119917814079. Its totient is φ = 39972204830.

The previous prime is 79944809491. The next prime is 79944809537. The reversal of 79944809522 is 22590844997.

It can be written as a sum of positive squares in only one way, i.e., 39972404761 + 39972404761 = 199931^2 + 199931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199931.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 299897 + ... + 499827.

Almost surely, 2^79944809522 is an apocalyptic number.

79944809522 is a deficient number, since it is larger than the sum of its proper divisors (39973004557).

79944809522 is an frugal number, since it uses more digits than its factorization.

79944809522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399864 (or 199933 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 79944809522 in words is "seventy-nine billion, nine hundred forty-four million, eight hundred nine thousand, five hundred twenty-two".