126073748657 has 8 divisors (see below), whose sum is σ = 126255330600. Its totient is φ = 125892226944.

The previous prime is 126073748653. The next prime is 126073748693. The reversal of 126073748657 is 756847370621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33122544016 + 92951204641 = 181996^2 + 304879^2 .

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 126073748657 - 2² = 126073748653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126073748651) 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, 5670719 + ... + 5692907.

It is an arithmetic number, because the mean of its divisors is an integer number (15781916325).

Almost surely, 2^126073748657 is an apocalyptic number.

It is an amenable number.

126073748657 is a deficient number, since it is larger than the sum of its proper divisors (181581943).

126073748657 is an equidigital number, since it uses as much as digits as its factorization.

126073748657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30115.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 126073748657 in words is "one hundred twenty-six billion, seventy-three million, seven hundred forty-eight thousand, six hundred fifty-seven".