126431211544 has 32 divisors (see below), whose sum is σ = 261275389200. Its totient is φ = 56876267520.

The previous prime is 126431211523. The next prime is 126431211559. The reversal of 126431211544 is 445112134621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7397229 + ... + 7414300.

Almost surely, 2^126431211544 is an apocalyptic number.

It is an amenable number.

126431211544 is an abundant number, since it is smaller than the sum of its proper divisors (134844177656).

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

126431211544 is a wasteful number, since it uses less digits than its factorization.

126431211544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14811643 (or 14811639 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The spelling of 126431211544 in words is "one hundred twenty-six billion, four hundred thirty-one million, two hundred eleven thousand, five hundred forty-four".