149921391456 has 60 divisors (see below), whose sum is σ = 440914655412. Its totient is φ = 49973796288.

The previous prime is 149921391413. The next prime is 149921391541. The reversal of 149921391456 is 654193129941.

149921391456 is a `hidden beast` number, since 1 + 4 + 9 + 92 + 13 + 91 + 456 = 666.

It is a super-2 number, since 2×149921391456² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28917430 + ... + 28922613.

Almost surely, 2^149921391456 is an apocalyptic number.

149921391456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

149921391456 is an abundant number, since it is smaller than the sum of its proper divisors (290993263956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149921391456 is an equidigital number, since it uses as much as digits as its factorization.

149921391456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57840065 (or 57840048 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 149921391456 in words is "one hundred forty-nine billion, nine hundred twenty-one million, three hundred ninety-one thousand, four hundred fifty-six".