20100635023 has 4 divisors (see below), whose sum is σ = 22972154320. Its totient is φ = 17229115728.

The previous prime is 20100635017. The next prime is 20100635033. The reversal of 20100635023 is 32053600102.

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 20100635023 - 2⁵ = 20100634991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100634985 and 20100635003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100635033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435759638 + ... + 1435759651.

It is an arithmetic number, because the mean of its divisors is an integer number (5743038580).

Almost surely, 2^20100635023 is an apocalyptic number.

20100635023 is a deficient number, since it is larger than the sum of its proper divisors (2871519297).

20100635023 is an equidigital number, since it uses as much as digits as its factorization.

20100635023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871519296.

The product of its (nonzero) digits is 1080, while the sum is 22.

The spelling of 20100635023 in words is "twenty billion, one hundred million, six hundred thirty-five thousand, twenty-three".