126877278528 has 448 divisors, whose sum is σ = 500812247040. Its totient is φ = 30419712000.

The previous prime is 126877278523. The next prime is 126877278551. The reversal of 126877278528 is 825872778621.

126877278528 is a `hidden beast` number, since 1 + 2 + 6 + 87 + 7 + 27 + 8 + 528 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126877278523) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1693053 + ... + 1766403.

It is an arithmetic number, because the mean of its divisors is an integer number (1117884480).

Almost surely, 2^126877278528 is an apocalyptic number.

126877278528 is a gapful number since it is divisible by the number (18) 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 126877278528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250406123520).

126877278528 is an abundant number, since it is smaller than the sum of its proper divisors (373934968512).

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

126877278528 is a wasteful number, since it uses less digits than its factorization.

126877278528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73403 (or 73387 counting only the distinct ones).

The product of its digits is 42147840, while the sum is 63.

The spelling of 126877278528 in words is "one hundred twenty-six billion, eight hundred seventy-seven million, two hundred seventy-eight thousand, five hundred twenty-eight".