126778860633600 has 5760 divisors, whose sum is σ = 588736815575040. Its totient is φ = 26587201536000.

The previous prime is 126778860633587. The next prime is 126778860633721. The reversal of 126778860633600 is 6336068877621.

126778860633600 is a `hidden beast` number, since 1 + 267 + 7 + 8 + 8 + 6 + 0 + 6 + 3 + 360 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5760).

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 polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 1184849164747 + ... + 1184849164853.

It is an arithmetic number, because the mean of its divisors is an integer number (102211252704).

Almost surely, 2^{126778860633600} is an apocalyptic number.

126778860633600 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 126778860633600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294368407787520).

126778860633600 is an abundant number, since it is smaller than the sum of its proper divisors (461957954941440).

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

126778860633600 is a wasteful number, since it uses less digits than its factorization.

126778860633600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 126778860633600 in words is "one hundred twenty-six trillion, seven hundred seventy-eight billion, eight hundred sixty million, six hundred thirty-three thousand, six hundred".