149972799520 has 24 divisors (see below), whose sum is σ = 354310739244. Its totient is φ = 59989119744.

The previous prime is 149972799499. The next prime is 149972799527. The reversal of 149972799520 is 25997279941.

It can be written as a sum of positive squares in 2 ways, for example, as 146618536464 + 3354263056 = 382908^2 + 57916^2 .

It is a super-2 number, since 2×149972799520² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149972799527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468664839 + ... + 468665158.

Almost surely, 2^149972799520 is an apocalyptic number.

149972799520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149972799520 is an abundant number, since it is smaller than the sum of its proper divisors (204337939724).

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

149972799520 is an equidigital number, since it uses as much as digits as its factorization.

149972799520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937330012 (or 937330004 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 64.

The spelling of 149972799520 in words is "one hundred forty-nine billion, nine hundred seventy-two million, seven hundred ninety-nine thousand, five hundred twenty".