2139881511563 has 4 divisors (see below), whose sum is σ = 2139918417768. Its totient is φ = 2139844605360.

The previous prime is 2139881511503. The next prime is 2139881511569. The reversal of 2139881511563 is 3651151889312.

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 2139881511563 - 2¹⁰ = 2139881510539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139881511569) 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, 18365993 + ... + 18482138.

It is an arithmetic number, because the mean of its divisors is an integer number (534979604442).

Almost surely, 2^{2139881511563} is an apocalyptic number.

2139881511563 is a deficient number, since it is larger than the sum of its proper divisors (36906205).

2139881511563 is an equidigital number, since it uses as much as digits as its factorization.

2139881511563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36906204.

The product of its digits is 1555200, while the sum is 53.

The spelling of 2139881511563 in words is "two trillion, one hundred thirty-nine billion, eight hundred eighty-one million, five hundred eleven thousand, five hundred sixty-three".