126539835120 has 160 divisors (see below), whose sum is σ = 436445399040. Its totient is φ = 33698592000.

The previous prime is 126539835113. The next prime is 126539835133. The reversal of 126539835120 is 21538935621.

126539835120 is a `hidden beast` number, since 1 + 2 + 6 + 53 + 9 + 83 + 512 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1583157 + ... + 1661163.

It is an arithmetic number, because the mean of its divisors is an integer number (2727783744).

Almost surely, 2^126539835120 is an apocalyptic number.

126539835120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126539835120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218222699520).

126539835120 is an abundant number, since it is smaller than the sum of its proper divisors (309905563920).

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

126539835120 is a wasteful number, since it uses less digits than its factorization.

126539835120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78780 (or 78768 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 126539835120 in words is "one hundred twenty-six billion, five hundred thirty-nine million, eight hundred thirty-five thousand, one hundred twenty".