149979437791 has 2 divisors, whose sum is σ = 149979437792. Its totient is φ = 149979437790.

The previous prime is 149979437759. The next prime is 149979437809. The reversal of 149979437791 is 197734979941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149979437791 - 2⁵ = 149979437759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149979437791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149979437711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74989718895 + 74989718896.

It is an arithmetic number, because the mean of its divisors is an integer number (74989718896).

Almost surely, 2^149979437791 is an apocalyptic number.

149979437791 is a deficient number, since it is larger than the sum of its proper divisors (1).

149979437791 is an equidigital number, since it uses as much as digits as its factorization.

149979437791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108020304, while the sum is 70.

The spelling of 149979437791 in words is "one hundred forty-nine billion, nine hundred seventy-nine million, four hundred thirty-seven thousand, seven hundred ninety-one".