126271864278 has 128 divisors (see below), whose sum is σ = 330480000000. Its totient is φ = 35719941600.

The previous prime is 126271864261. The next prime is 126271864283. The reversal of 126271864278 is 872468172621.

126271864278 is a `hidden beast` number, since 1 + 2 + 627 + 1 + 8 + 6 + 4 + 2 + 7 + 8 = 666.

It is a super-2 number, since 2×126271864278² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1836973 + ... + 1904471.

It is an arithmetic number, because the mean of its divisors is an integer number (2581875000).

Almost surely, 2^126271864278 is an apocalyptic number.

126271864278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 126271864278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165240000000).

126271864278 is an abundant number, since it is smaller than the sum of its proper divisors (204208135722).

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

126271864278 is a wasteful number, since it uses less digits than its factorization.

126271864278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67632 (or 67612 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 126271864278 in words is "one hundred twenty-six billion, two hundred seventy-one million, eight hundred sixty-four thousand, two hundred seventy-eight".