126784802663 has 16 divisors (see below), whose sum is σ = 132644584800. Its totient is φ = 121032051840.

The previous prime is 126784802657. The next prime is 126784802681. The reversal of 126784802663 is 366208487621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 126784802663 - 2¹⁰ = 126784801639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126784802063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838268 + ... + 977886.

It is an arithmetic number, because the mean of its divisors is an integer number (8290286550).

Almost surely, 2^126784802663 is an apocalyptic number.

126784802663 is a deficient number, since it is larger than the sum of its proper divisors (5859782137).

126784802663 is a wasteful number, since it uses less digits than its factorization.

126784802663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140002.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 126784802663 in words is "one hundred twenty-six billion, seven hundred eighty-four million, eight hundred two thousand, six hundred sixty-three".