126388763889 has 8 divisors (see below), whose sum is σ = 171280948032. Its totient is φ = 82877877840.

The previous prime is 126388763861. The next prime is 126388763953. The reversal of 126388763889 is 988367883621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126388763889 - 2⁹ = 126388763377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126388763489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345324309 + ... + 345324674.

It is an arithmetic number, because the mean of its divisors is an integer number (21410118504).

Almost surely, 2^126388763889 is an apocalyptic number.

It is an amenable number.

126388763889 is a deficient number, since it is larger than the sum of its proper divisors (44892184143).

126388763889 is an equidigital number, since it uses as much as digits as its factorization.

126388763889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690649047.

The product of its digits is 167215104, while the sum is 69.

The spelling of 126388763889 in words is "one hundred twenty-six billion, three hundred eighty-eight million, seven hundred sixty-three thousand, eight hundred eighty-nine".