126415988657 has 8 divisors (see below), whose sum is σ = 145578282432. Its totient is φ = 107529411600.

The previous prime is 126415988641. The next prime is 126415988669. The reversal of 126415988657 is 756889514621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126415988657 - 2⁴ = 126415988641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126415988657.

It is not an unprimeable number, because it can be changed into a prime (126415988687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68928194 + ... + 68930027.

It is an arithmetic number, because the mean of its divisors is an integer number (18197285304).

Almost surely, 2^126415988657 is an apocalyptic number.

It is an amenable number.

126415988657 is a deficient number, since it is larger than the sum of its proper divisors (19162293775).

126415988657 is a wasteful number, since it uses less digits than its factorization.

126415988657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137858359.

The product of its digits is 29030400, while the sum is 62.

The spelling of 126415988657 in words is "one hundred twenty-six billion, four hundred fifteen million, nine hundred eighty-eight thousand, six hundred fifty-seven".