126899900864 has 56 divisors (see below), whose sum is σ = 274766032128. Its totient is φ = 57669891840.

The previous prime is 126899900791. The next prime is 126899900891. The reversal of 126899900864 is 468009998621.

It is a happy number.

It is a super-2 number, since 2×126899900864² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126899900797 and 126899900806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4027379 + ... + 4058765.

It is an arithmetic number, because the mean of its divisors is an integer number (4906536288).

Almost surely, 2^126899900864 is an apocalyptic number.

It is an amenable number.

126899900864 is an abundant number, since it is smaller than the sum of its proper divisors (147866131264).

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

126899900864 is a wasteful number, since it uses less digits than its factorization.

126899900864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37153 (or 37143 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 62.

The spelling of 126899900864 in words is "one hundred twenty-six billion, eight hundred ninety-nine million, nine hundred thousand, eight hundred sixty-four".