10042720663 has 4 divisors (see below), whose sum is σ = 10043038800. Its totient is φ = 10042402528.

The previous prime is 10042720657. The next prime is 10042720697. The reversal of 10042720663 is 36602724001.

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 10042720663 - 2⁵ = 10042720631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10042720463) 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, 105763 + ... + 176836.

It is an arithmetic number, because the mean of its divisors is an integer number (2510759700).

Almost surely, 2^10042720663 is an apocalyptic number.

10042720663 is a deficient number, since it is larger than the sum of its proper divisors (318137).

10042720663 is an equidigital number, since it uses as much as digits as its factorization.

10042720663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318136.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 10042720663 in words is "ten billion, forty-two million, seven hundred twenty thousand, six hundred sixty-three".