126857045988 has 18 divisors (see below), whose sum is σ = 320666421894. Its totient is φ = 42285681984.

The previous prime is 126857045981. The next prime is 126857046011. The reversal of 126857045988 is 889540758621.

126857045988 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 570 + 4 + 59 + 8 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87061583844 + 39795462144 = 295062^2 + 199488^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×126857045988² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126857045981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1761903381 + ... + 1761903452.

Almost surely, 2^126857045988 is an apocalyptic number.

126857045988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

126857045988 is an abundant number, since it is smaller than the sum of its proper divisors (193809375906).

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

126857045988 is a wasteful number, since it uses less digits than its factorization.

126857045988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523806843 (or 3523806838 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 126857045988 in words is "one hundred twenty-six billion, eight hundred fifty-seven million, forty-five thousand, nine hundred eighty-eight".