79191463237 has 2 divisors, whose sum is σ = 79191463238. Its totient is φ = 79191463236.

The previous prime is 79191463207. The next prime is 79191463289. The reversal of 79191463237 is 73236419197.

It is an a-pointer prime, because the next prime (79191463289) can be obtained adding 79191463237 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55598810436 + 23592652801 = 235794^2 + 153599^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79191463237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79191463207) by changing a digit.

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 as a sum of consecutive naturals, namely, 39595731618 + 39595731619.

It is an arithmetic number, because the mean of its divisors is an integer number (39595731619).

Almost surely, 2^79191463237 is an apocalyptic number.

It is an amenable number.

79191463237 is a deficient number, since it is larger than the sum of its proper divisors (1).

79191463237 is an equidigital number, since it uses as much as digits as its factorization.

79191463237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The spelling of 79191463237 in words is "seventy-nine billion, one hundred ninety-one million, four hundred sixty-three thousand, two hundred thirty-seven".