126874165636 has 27 divisors (see below), whose sum is σ = 223133565711. Its totient is φ = 63123275904.

The previous prime is 126874165631. The next prime is 126874165661. The reversal of 126874165636 is 636561478621.

It is a happy number.

The square root of 126874165636 is 356194.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 97925184900 + 28948980736 = 312930^2 + 170144^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126874165631) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 222977160 + ... + 222977728.

Almost surely, 2^126874165636 is an apocalyptic number.

126874165636 is the 356194-th square number.

It is an amenable number.

126874165636 is a deficient number, since it is larger than the sum of its proper divisors (96259400075).

126874165636 is an frugal number, since it uses more digits than its factorization.

126874165636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 884 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 126874165636 in words is "one hundred twenty-six billion, eight hundred seventy-four million, one hundred sixty-five thousand, six hundred thirty-six".