126720254560 has 96 divisors (see below), whose sum is σ = 302821327872. Its totient is φ = 50107760640.

The previous prime is 126720254519. The next prime is 126720254581. The reversal of 126720254560 is 65452027621.

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 15 ways as a sum of consecutive naturals, for example, 5698824 + ... + 5721016.

It is an arithmetic number, because the mean of its divisors is an integer number (3154388832).

Almost surely, 2^126720254560 is an apocalyptic number.

126720254560 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 126720254560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151410663936).

126720254560 is an abundant number, since it is smaller than the sum of its proper divisors (176101073312).

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

126720254560 is a wasteful number, since it uses less digits than its factorization.

126720254560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22616 (or 22608 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 126720254560 in words is "one hundred twenty-six billion, seven hundred twenty million, two hundred fifty-four thousand, five hundred sixty".