1263668428801 has 4 divisors (see below), whose sum is σ = 1264539325104. Its totient is φ = 1262797532500.

The previous prime is 1263668428747. The next prime is 1263668428849. The reversal of 1263668428801 is 1088248663621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1263668428801 - 2²⁷ = 1263534211073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263668428871) 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, 435445975 + ... + 435448876.

It is an arithmetic number, because the mean of its divisors is an integer number (316134831276).

Almost surely, 2^{1263668428801} is an apocalyptic number.

It is an amenable number.

1263668428801 is a deficient number, since it is larger than the sum of its proper divisors (870896303).

1263668428801 is an equidigital number, since it uses as much as digits as its factorization.

1263668428801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870896302.

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 1263668428801 in words is "one trillion, two hundred sixty-three billion, six hundred sixty-eight million, four hundred twenty-eight thousand, eight hundred one".