126511107856 has 45 divisors (see below), whose sum is σ = 285156539271. Its totient is φ = 54214778016.

The previous prime is 126511107851. The next prime is 126511107871. The reversal of 126511107856 is 658701115621.

The square root of 126511107856 is 355684.

It is a perfect power (a square), and thus also a powerful number.

126511107856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126511107851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9952801 + ... + 9965503.

Almost surely, 2^126511107856 is an apocalyptic number.

126511107856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

126511107856 is the 355684-th square number.

It is an amenable number.

126511107856 is an abundant number, since it is smaller than the sum of its proper divisors (158645431415).

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

126511107856 is an frugal number, since it uses more digits than its factorization.

126511107856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25428 (or 12712 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 126511107856 in words is "one hundred twenty-six billion, five hundred eleven million, one hundred seven thousand, eight hundred fifty-six".