126637751797 has 32 divisors (see below), whose sum is σ = 133172895744. Its totient is φ = 120331142400.

The previous prime is 126637751741. The next prime is 126637751803. The reversal of 126637751797 is 797157736621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126637751797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126637751717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62971522 + ... + 62973532.

It is an arithmetic number, because the mean of its divisors is an integer number (4161652992).

Almost surely, 2^126637751797 is an apocalyptic number.

It is an amenable number.

126637751797 is a deficient number, since it is larger than the sum of its proper divisors (6535143947).

126637751797 is a wasteful number, since it uses less digits than its factorization.

126637751797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409.

The product of its digits is 23337720, while the sum is 61.

The spelling of 126637751797 in words is "one hundred twenty-six billion, six hundred thirty-seven million, seven hundred fifty-one thousand, seven hundred ninety-seven".