12252049578 has 32 divisors (see below), whose sum is σ = 27244166400. Its totient is φ = 4081408128.

The previous prime is 12252049567. The next prime is 12252049613. The reversal of 12252049578 is 87594025221.

12252049578 is a `hidden beast` number, since 1 + 22 + 52 + 0 + 4 + 9 + 578 = 666.

12252049578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12252049578² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13818 + ... + 157146.

It is an arithmetic number, because the mean of its divisors is an integer number (851380200).

Almost surely, 2^12252049578 is an apocalyptic number.

12252049578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12252049578 is an abundant number, since it is smaller than the sum of its proper divisors (14992116822).

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

12252049578 is a wasteful number, since it uses less digits than its factorization.

12252049578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144923 (or 144917 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 12252049578 in words is "twelve billion, two hundred fifty-two million, forty-nine thousand, five hundred seventy-eight".