149691954377 has 16 divisors (see below), whose sum is σ = 181570165632. Its totient is φ = 120473015040.

The previous prime is 149691954367. The next prime is 149691954397. The reversal of 149691954377 is 773459196941.

It is not a de Polignac number, because 149691954377 - 2³² = 145396987081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149691954337) 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, 1443863 + ... + 1544060.

It is an arithmetic number, because the mean of its divisors is an integer number (11348135352).

Almost surely, 2^149691954377 is an apocalyptic number.

149691954377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

149691954377 is a deficient number, since it is larger than the sum of its proper divisors (31878211255).

149691954377 is a wasteful number, since it uses less digits than its factorization.

149691954377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988368.

The product of its digits is 51438240, while the sum is 65.

The spelling of 149691954377 in words is "one hundred forty-nine billion, six hundred ninety-one million, nine hundred fifty-four thousand, three hundred seventy-seven".