79851269192 has 12 divisors (see below), whose sum is σ = 149722628355. Its totient is φ = 39925234968.

The previous prime is 79851269191. The next prime is 79851269203. The reversal of 79851269192 is 29196215897.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 39925634596 + 39925634596 = 199814^2 + 199814^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199814.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79851269191) 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, 749303 + ... + 849209.

Almost surely, 2^79851269192 is an apocalyptic number.

It is an amenable number.

79851269192 is a deficient number, since it is larger than the sum of its proper divisors (69871359163).

79851269192 is an frugal number, since it uses more digits than its factorization.

79851269192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199820 (or 99909 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 59.

The spelling of 79851269192 in words is "seventy-nine billion, eight hundred fifty-one million, two hundred sixty-nine thousand, one hundred ninety-two".