126637640375 has 16 divisors (see below), whose sum is σ = 158147784288. Its totient is φ = 101243440000.

The previous prime is 126637640359. The next prime is 126637640383. The reversal of 126637640375 is 573046736621.

It is not a de Polignac number, because 126637640375 - 2⁴ = 126637640359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142226 + ... + 522975.

It is an arithmetic number, because the mean of its divisors is an integer number (9884236518).

Almost surely, 2^126637640375 is an apocalyptic number.

126637640375 is a deficient number, since it is larger than the sum of its proper divisors (31510143913).

126637640375 is an equidigital number, since it uses as much as digits as its factorization.

126637640375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666739 (or 666729 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 50.

The spelling of 126637640375 in words is "one hundred twenty-six billion, six hundred thirty-seven million, six hundred forty thousand, three hundred seventy-five".