126820866620 has 48 divisors (see below), whose sum is σ = 310112929728. Its totient is φ = 42661032960.

The previous prime is 126820866587. The next prime is 126820866637. The reversal of 126820866620 is 26668028621.

It is a congruent number.

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, 8538461 + ... + 8553300.

It is an arithmetic number, because the mean of its divisors is an integer number (6460686036).

Almost surely, 2^126820866620 is an apocalyptic number.

126820866620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126820866620 is an abundant number, since it is smaller than the sum of its proper divisors (183292063108).

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

126820866620 is a wasteful number, since it uses less digits than its factorization.

126820866620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17091830 (or 17091828 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 126820866620 in words is "one hundred twenty-six billion, eight hundred twenty million, eight hundred sixty-six thousand, six hundred twenty".