126665413875 has 256 divisors, whose sum is σ = 314445680640. Its totient is φ = 48589632000.

The previous prime is 126665413843. The next prime is 126665413891. The reversal of 126665413875 is 578314566621.

It is a happy number.

It is not a de Polignac number, because 126665413875 - 2⁵ = 126665413843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 3359629 + ... + 3397121.

It is an arithmetic number, because the mean of its divisors is an integer number (1228303440).

Almost surely, 2^126665413875 is an apocalyptic number.

126665413875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126665413875 is an abundant number, since it is smaller than the sum of its proper divisors (187780266765).

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

126665413875 is a wasteful number, since it uses less digits than its factorization.

126665413875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37548 (or 37532 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 126665413875 in words is "one hundred twenty-six billion, six hundred sixty-five million, four hundred thirteen thousand, eight hundred seventy-five".