149979437805 has 16 divisors (see below), whose sum is σ = 242168636160. Its totient is φ = 79255188288.

The previous prime is 149979437791. The next prime is 149979437809. The reversal of 149979437805 is 508734979941.

It is not a de Polignac number, because 149979437805 - 2⁸ = 149979437549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149979437809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45863637 + ... + 45866906.

It is an arithmetic number, because the mean of its divisors is an integer number (15135539760).

Almost surely, 2^149979437805 is an apocalyptic number.

149979437805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149979437805 is a deficient number, since it is larger than the sum of its proper divisors (92189198355).

149979437805 is a wasteful number, since it uses less digits than its factorization.

149979437805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91730660.

The product of its (nonzero) digits is 68584320, while the sum is 66.

The spelling of 149979437805 in words is "one hundred forty-nine billion, nine hundred seventy-nine million, four hundred thirty-seven thousand, eight hundred five".