102561863039 has 4 divisors (see below), whose sum is σ = 108594913824. Its totient is φ = 96528812256.

The previous prime is 102561863011. The next prime is 102561863059. The reversal of 102561863039 is 930368165201.

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 102561863039 - 2²⁰ = 102560814463 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 (102561863009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016525367 + ... + 3016525400.

It is an arithmetic number, because the mean of its divisors is an integer number (27148728456).

Almost surely, 2^102561863039 is an apocalyptic number.

102561863039 is a deficient number, since it is larger than the sum of its proper divisors (6033050785).

102561863039 is an equidigital number, since it uses as much as digits as its factorization.

102561863039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033050784.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 102561863039 in words is "one hundred two billion, five hundred sixty-one million, eight hundred sixty-three thousand, thirty-nine".