126657343788 has 12 divisors (see below), whose sum is σ = 295533802200. Its totient is φ = 42219114592.

The previous prime is 126657343739. The next prime is 126657343793. The reversal of 126657343788 is 887343756621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5277389313 + ... + 5277389336.

It is an arithmetic number, because the mean of its divisors is an integer number (24627816850).

Almost surely, 2^126657343788 is an apocalyptic number.

It is an amenable number.

126657343788 is an abundant number, since it is smaller than the sum of its proper divisors (168876458412).

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

126657343788 is a wasteful number, since it uses less digits than its factorization.

126657343788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554778656 (or 10554778654 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 126657343788 in words is "one hundred twenty-six billion, six hundred fifty-seven million, three hundred forty-three thousand, seven hundred eighty-eight".