126720401632600 has 192 divisors, whose sum is σ = 308399914758240. Its totient is φ = 48371521536000.

The previous prime is 126720401632589. The next prime is 126720401632667. The reversal of 126720401632600 is 6236104027621.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209100200 + ... + 1209205000.

Almost surely, 2^{126720401632600} is an apocalyptic number.

126720401632600 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 126720401632600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154199957379120).

126720401632600 is an abundant number, since it is smaller than the sum of its proper divisors (181679513125640).

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

126720401632600 is a wasteful number, since it uses less digits than its factorization.

126720401632600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107990 (or 107981 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 126720401632600 in words is "one hundred twenty-six trillion, seven hundred twenty billion, four hundred one million, six hundred thirty-two thousand, six hundred".