79194062991 has 4 divisors (see below), whose sum is σ = 105592083992. Its totient is φ = 52796041992.

The previous prime is 79194062977. The next prime is 79194063041. The reversal of 79194062991 is 19926049197.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 79194062991 - 2³¹ = 77046579343 is a prime.

It is a super-2 number, since 2×79194062991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79194060991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13199010496 + ... + 13199010501.

It is an arithmetic number, because the mean of its divisors is an integer number (26398020998).

Almost surely, 2^79194062991 is an apocalyptic number.

79194062991 is a deficient number, since it is larger than the sum of its proper divisors (26398021001).

79194062991 is a wasteful number, since it uses less digits than its factorization.

79194062991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26398021000.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The spelling of 79194062991 in words is "seventy-nine billion, one hundred ninety-four million, sixty-two thousand, nine hundred ninety-one".