126431054644 has 6 divisors (see below), whose sum is σ = 221254345634. Its totient is φ = 63215527320.

The previous prime is 126431054597. The next prime is 126431054713. The reversal of 126431054644 is 446450134621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 89497902244 + 36933152400 = 299162^2 + 192180^2 .

It is a super-2 number, since 2×126431054644² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126431054597 and 126431054606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15803881827 + ... + 15803881834.

Almost surely, 2^126431054644 is an apocalyptic number.

It is an amenable number.

126431054644 is a deficient number, since it is larger than the sum of its proper divisors (94823290990).

126431054644 is a wasteful number, since it uses less digits than its factorization.

126431054644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31607763665 (or 31607763663 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 126431054644 in words is "one hundred twenty-six billion, four hundred thirty-one million, fifty-four thousand, six hundred forty-four".