126653604263 has 4 divisors (see below), whose sum is σ = 126662224920. Its totient is φ = 126644983608.

The previous prime is 126653604223. The next prime is 126653604331. The reversal of 126653604263 is 362406356621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126653604263 - 2¹⁰ = 126653603239 is a prime.

It is a super-2 number, since 2×126653604263² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126653604223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4288253 + ... + 4317686.

It is an arithmetic number, because the mean of its divisors is an integer number (31665556230).

Almost surely, 2^126653604263 is an apocalyptic number.

126653604263 is a deficient number, since it is larger than the sum of its proper divisors (8620657).

126653604263 is an equidigital number, since it uses as much as digits as its factorization.

126653604263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620656.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 126653604263 in words is "one hundred twenty-six billion, six hundred fifty-three million, six hundred four thousand, two hundred sixty-three".