149553961685 has 16 divisors (see below), whose sum is σ = 180992351232. Its totient is φ = 118628856000.

The previous prime is 149553961651. The next prime is 149553961693. The reversal of 149553961685 is 586169355941.

It is not a de Polignac number, because 149553961685 - 2²⁰ = 149552913109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38135 + ... + 548235.

It is an arithmetic number, because the mean of its divisors is an integer number (11312021952).

Almost surely, 2^149553961685 is an apocalyptic number.

It is an amenable number.

149553961685 is a deficient number, since it is larger than the sum of its proper divisors (31438389547).

149553961685 is a wasteful number, since it uses less digits than its factorization.

149553961685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510604.

The product of its digits is 34992000, while the sum is 62.

The spelling of 149553961685 in words is "one hundred forty-nine billion, five hundred fifty-three million, nine hundred sixty-one thousand, six hundred eighty-five".