126990273745920 has 704 divisors, whose sum is σ = 443706856395264. Its totient is φ = 30810046464000.

The previous prime is 126990273745919. The next prime is 126990273745939. The reversal of 126990273745920 is 29547372099621.

It is a happy number.

It is a super-2 number, since 2×126990273745920² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42315984420 + ... + 42315987420.

It is an arithmetic number, because the mean of its divisors is an integer number (630265421016).

Almost surely, 2^{126990273745920} is an apocalyptic number.

126990273745920 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 126990273745920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221853428197632).

126990273745920 is an abundant number, since it is smaller than the sum of its proper divisors (316716582649344).

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

126990273745920 is a wasteful number, since it uses less digits than its factorization.

126990273745920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018 (or 6000 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 66.

The spelling of 126990273745920 in words is "one hundred twenty-six trillion, nine hundred ninety billion, two hundred seventy-three million, seven hundred forty-five thousand, nine hundred twenty".