149194856641 has 16 divisors (see below), whose sum is σ = 159359823360. Its totient is φ = 139367007360.

The previous prime is 149194856633. The next prime is 149194856693. The reversal of 149194856641 is 146658491941.

It is a cyclic number.

It is not a de Polignac number, because 149194856641 - 2³ = 149194856633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149194856341) 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, 3794901 + ... + 3834013.

It is an arithmetic number, because the mean of its divisors is an integer number (9959988960).

Almost surely, 2^149194856641 is an apocalyptic number.

It is an amenable number.

149194856641 is a deficient number, since it is larger than the sum of its proper divisors (10164966719).

149194856641 is a wasteful number, since it uses less digits than its factorization.

149194856641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43416.

The product of its digits is 7464960, while the sum is 58.

The spelling of 149194856641 in words is "one hundred forty-nine billion, one hundred ninety-four million, eight hundred fifty-six thousand, six hundred forty-one".