126213207580 has 24 divisors (see below), whose sum is σ = 265911096528. Its totient is φ = 50320833408.

The previous prime is 126213207551. The next prime is 126213207611. The reversal of 126213207580 is 85702312621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10271809 + ... + 10284088.

It is an arithmetic number, because the mean of its divisors is an integer number (11079629022).

Almost surely, 2^126213207580 is an apocalyptic number.

126213207580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126213207580 is an abundant number, since it is smaller than the sum of its proper divisors (139697888948).

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

126213207580 is a wasteful number, since it uses less digits than its factorization.

126213207580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20556213 (or 20556211 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 126213207580 in words is "one hundred twenty-six billion, two hundred thirteen million, two hundred seven thousand, five hundred eighty".