126137438790 has 64 divisors (see below), whose sum is σ = 331693090560. Its totient is φ = 30445223040.

The previous prime is 126137438783. The next prime is 126137438803. The reversal of 126137438790 is 97834731621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 759004 + ... + 910143.

It is an arithmetic number, because the mean of its divisors is an integer number (5182704540).

Almost surely, 2^126137438790 is an apocalyptic number.

126137438790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126137438790 is an abundant number, since it is smaller than the sum of its proper divisors (205555651770).

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

126137438790 is a wasteful number, since it uses less digits than its factorization.

126137438790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669397.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 126137438790 in words is "one hundred twenty-six billion, one hundred thirty-seven million, four hundred thirty-eight thousand, seven hundred ninety".