126388890015 has 16 divisors (see below), whose sum is σ = 202338019968. Its totient is φ = 67368809376.

The previous prime is 126388890011. The next prime is 126388890031. The reversal of 126388890015 is 510098883621.

It is not a de Polignac number, because 126388890015 - 2² = 126388890011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126388890015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126388890011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385337 + ... + 2437746.

It is an arithmetic number, because the mean of its divisors is an integer number (12646126248).

Almost surely, 2^126388890015 is an apocalyptic number.

126388890015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126388890015 is a deficient number, since it is larger than the sum of its proper divisors (75949129953).

126388890015 is a wasteful number, since it uses less digits than its factorization.

126388890015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824838.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 126388890015 in words is "one hundred twenty-six billion, three hundred eighty-eight million, eight hundred ninety thousand, fifteen".