149639658787441 has 9 divisors (see below), whose sum is σ = 150397842202713. Its totient is φ = 148885278622740.

The previous prime is 149639658787379. The next prime is 149639658787453. The reversal of 149639658787441 is 144787856936941.

The square root of 149639658787441 is 12232729.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 149639658787441 - 2⁹ = 149639658786929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149639658781441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2434282336 + ... + 2434343806.

It is an arithmetic number, because the mean of its divisors is an integer number (16710871355857).

Almost surely, 2^{149639658787441} is an apocalyptic number.

149639658787441 is the 12232729-th square number.

149639658787441 is the 6116365-th centered octagonal number.

It is an amenable number.

149639658787441 is a deficient number, since it is larger than the sum of its proper divisors (758183415272).

149639658787441 is an frugal number, since it uses more digits than its factorization.

149639658787441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123340 (or 61670 counting only the distinct ones).

The product of its digits is 8778792960, while the sum is 82.

The spelling of 149639658787441 in words is "one hundred forty-nine trillion, six hundred thirty-nine billion, six hundred fifty-eight million, seven hundred eighty-seven thousand, four hundred forty-one".