100863868013 has 4 divisors (see below), whose sum is σ = 102517374108. Its totient is φ = 99210361920.

The previous prime is 100863867971. The next prime is 100863868073. The reversal of 100863868013 is 310868368001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3108843049 + 97755024964 = 55757^2 + 312658^2 .

It is a cyclic number.

It is not a de Polignac number, because 100863868013 - 2²⁰ = 100862819437 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 (100863868073) 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, 826752956 + ... + 826753077.

It is an arithmetic number, because the mean of its divisors is an integer number (25629343527).

Almost surely, 2^100863868013 is an apocalyptic number.

It is an amenable number.

100863868013 is a deficient number, since it is larger than the sum of its proper divisors (1653506095).

100863868013 is an equidigital number, since it uses as much as digits as its factorization.

100863868013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653506094.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 100863868013 in words is "one hundred billion, eight hundred sixty-three million, eight hundred sixty-eight thousand, thirteen".