79612278191 has 2 divisors, whose sum is σ = 79612278192. Its totient is φ = 79612278190.

The previous prime is 79612278143. The next prime is 79612278199. The reversal of 79612278191 is 19187221697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79612278191 - 2¹⁸ = 79612016047 is a prime.

It is a super-2 number, since 2×79612278191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79612278199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39806139095 + 39806139096.

It is an arithmetic number, because the mean of its divisors is an integer number (39806139096).

Almost surely, 2^79612278191 is an apocalyptic number.

79612278191 is a deficient number, since it is larger than the sum of its proper divisors (1).

79612278191 is an equidigital number, since it uses as much as digits as its factorization.

79612278191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 53.

The spelling of 79612278191 in words is "seventy-nine billion, six hundred twelve million, two hundred seventy-eight thousand, one hundred ninety-one".