79772496418 has 16 divisors (see below), whose sum is σ = 120477555000. Its totient is φ = 39613381632.

The previous prime is 79772496367. The next prime is 79772496457. The reversal of 79772496418 is 81469427797.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21940423129 + 57832073289 = 148123^2 + 240483^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79772496418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3364228 + ... + 3387856.

Almost surely, 2^79772496418 is an apocalyptic number.

79772496418 is a deficient number, since it is larger than the sum of its proper divisors (40705058582).

79772496418 is a wasteful number, since it uses less digits than its factorization.

79772496418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35109.

The product of its digits is 42674688, while the sum is 64.

The spelling of 79772496418 in words is "seventy-nine billion, seven hundred seventy-two million, four hundred ninety-six thousand, four hundred eighteen".