126889506918 has 12 divisors (see below), whose sum is σ = 274927265028. Its totient is φ = 42296502300.

The previous prime is 126889506917. The next prime is 126889506929. The reversal of 126889506918 is 819605988621.

It is a super-2 number, since 2×126889506918² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126889506917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3524708508 + ... + 3524708543.

It is an arithmetic number, because the mean of its divisors is an integer number (22910605419).

Almost surely, 2^126889506918 is an apocalyptic number.

126889506918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

126889506918 is an abundant number, since it is smaller than the sum of its proper divisors (148037758110).

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

126889506918 is a wasteful number, since it uses less digits than its factorization.

126889506918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049417059 (or 7049417056 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 126889506918 in words is "one hundred twenty-six billion, eight hundred eighty-nine million, five hundred six thousand, nine hundred eighteen".