149749249452 has 48 divisors (see below), whose sum is σ = 381384267264. Its totient is φ = 45354232000.

The previous prime is 149749249439. The next prime is 149749249457. The reversal of 149749249452 is 254942947941.

It is a super-2 number, since 2×149749249452² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149749249457) 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, 56199 + ... + 550142.

It is an arithmetic number, because the mean of its divisors is an integer number (7945505568).

Almost surely, 2^149749249452 is an apocalyptic number.

149749249452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149749249452 is an abundant number, since it is smaller than the sum of its proper divisors (231635017812).

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

149749249452 is a wasteful number, since it uses less digits than its factorization.

149749249452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608230 (or 608228 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The spelling of 149749249452 in words is "one hundred forty-nine billion, seven hundred forty-nine million, two hundred forty-nine thousand, four hundred fifty-two".