126263661365 has 8 divisors (see below), whose sum is σ = 151518366720. Its totient is φ = 101009613712.

The previous prime is 126263661347. The next prime is 126263661367. The reversal of 126263661365 is 563166362621.

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 126263661365 - 2³⁰ = 125189919541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126263661367) 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, 507716 + ... + 714354.

It is an arithmetic number, because the mean of its divisors is an integer number (18939795840).

Almost surely, 2^126263661365 is an apocalyptic number.

It is an amenable number.

126263661365 is a deficient number, since it is larger than the sum of its proper divisors (25254705355).

126263661365 is a wasteful number, since it uses less digits than its factorization.

126263661365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328851.

The product of its digits is 1399680, while the sum is 47.

The spelling of 126263661365 in words is "one hundred twenty-six billion, two hundred sixty-three million, six hundred sixty-one thousand, three hundred sixty-five".