126497227878 has 256 divisors, whose sum is σ = 336919265280. Its totient is φ = 34422796800.

The previous prime is 126497227859. The next prime is 126497227891. The reversal of 126497227878 is 878722794621.

126497227878 is a `hidden beast` number, since 1 + 2 + 6 + 497 + 2 + 2 + 78 + 78 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 375362526 + ... + 375362862.

It is an arithmetic number, because the mean of its divisors is an integer number (1316090880).

Almost surely, 2^126497227878 is an apocalyptic number.

126497227878 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 126497227878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168459632640).

126497227878 is an abundant number, since it is smaller than the sum of its proper divisors (210422037402).

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

126497227878 is a wasteful number, since it uses less digits than its factorization.

126497227878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800 (or 794 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 126497227878 in words is "one hundred twenty-six billion, four hundred ninety-seven million, two hundred twenty-seven thousand, eight hundred seventy-eight".