126263752640 has 56 divisors (see below), whose sum is σ = 302960818512. Its totient is φ = 50119946240.

The previous prime is 126263752591. The next prime is 126263752651. The reversal of 126263752640 is 46257362621.

It is a junction number, because it is equal to n+sod(n) for n = 126263752591 and 126263752600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464089 + ... + 1547928.

Almost surely, 2^126263752640 is an apocalyptic number.

126263752640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126263752640 is an abundant number, since it is smaller than the sum of its proper divisors (176697065872).

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

126263752640 is a wasteful number, since it uses less digits than its factorization.

126263752640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012165 (or 3012155 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 126263752640 in words is "one hundred twenty-six billion, two hundred sixty-three million, seven hundred fifty-two thousand, six hundred forty".