126399184452 has 48 divisors (see below), whose sum is σ = 329595866880. Its totient is φ = 41889511584.

The previous prime is 126399184451. The next prime is 126399184459. The reversal of 126399184452 is 254481993621.

It is a happy number.

126399184452 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 9 + 9 + 184 + 452 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (126399184451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3363868 + ... + 3401235.

It is an arithmetic number, because the mean of its divisors is an integer number (6866580560).

Almost surely, 2^126399184452 is an apocalyptic number.

126399184452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126399184452 is an abundant number, since it is smaller than the sum of its proper divisors (203196682428).

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

126399184452 is a wasteful number, since it uses less digits than its factorization.

126399184452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765289 (or 6765281 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 126399184452 in words is "one hundred twenty-six billion, three hundred ninety-nine million, one hundred eighty-four thousand, four hundred fifty-two".