127796978400 has 864 divisors, whose sum is σ = 525150138240. Its totient is φ = 26755706880.

The previous prime is 127796978399. The next prime is 127796978429. The reversal of 127796978400 is 4879697721.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 273654967 + ... + 273655433.

It is an arithmetic number, because the mean of its divisors is an integer number (607812660).

Almost surely, 2^127796978400 is an apocalyptic number.

127796978400 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 127796978400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262575069120).

127796978400 is an abundant number, since it is smaller than the sum of its proper divisors (397353159840).

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

127796978400 is a wasteful number, since it uses less digits than its factorization.

127796978400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 127796978400 in words is "one hundred twenty-seven billion, seven hundred ninety-six million, nine hundred seventy-eight thousand, four hundred".