126625889680 has 80 divisors (see below), whose sum is σ = 302360558400. Its totient is φ = 49298700800.

The previous prime is 126625889657. The next prime is 126625889711. The reversal of 126625889680 is 86988526621.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343911 + ... + 609529.

It is an arithmetic number, because the mean of its divisors is an integer number (3779506980).

Almost surely, 2^126625889680 is an apocalyptic number.

126625889680 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 126625889680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151180279200).

126625889680 is an abundant number, since it is smaller than the sum of its proper divisors (175734668720).

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

126625889680 is a wasteful number, since it uses less digits than its factorization.

126625889680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265792 (or 265786 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 126625889680 in words is "one hundred twenty-six billion, six hundred twenty-five million, eight hundred eighty-nine thousand, six hundred eighty".