126697305600 has 480 divisors, whose sum is σ = 473883553440. Its totient is φ = 33143685120.

The previous prime is 126697305593. The next prime is 126697305649. The reversal of 126697305600 is 6503796621.

126697305600 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 9 + 7 + 30 + 5 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 18313342 + ... + 18320258.

It is an arithmetic number, because the mean of its divisors is an integer number (987257403).

Almost surely, 2^126697305600 is an apocalyptic number.

126697305600 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 126697305600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236941776720).

126697305600 is an abundant number, since it is smaller than the sum of its proper divisors (347186247840).

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

126697305600 is an equidigital number, since it uses as much as digits as its factorization.

126697305600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7007 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 126697305600 in words is "one hundred twenty-six billion, six hundred ninety-seven million, three hundred five thousand, six hundred".