2179703885623 has 4 divisors (see below), whose sum is σ = 2377858784328. Its totient is φ = 1981548986920.

The previous prime is 2179703885581. The next prime is 2179703885627. The reversal of 2179703885623 is 3265883079712.

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 2179703885623 - 2⁹ = 2179703885111 is a prime.

It is a super-2 number, since 2×2179703885623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2179703885627) 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, 99077449336 + ... + 99077449357.

It is an arithmetic number, because the mean of its divisors is an integer number (594464696082).

Almost surely, 2^{2179703885623} is an apocalyptic number.

2179703885623 is a deficient number, since it is larger than the sum of its proper divisors (198154898705).

2179703885623 is a wasteful number, since it uses less digits than its factorization.

2179703885623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198154898704.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 2179703885623 in words is "two trillion, one hundred seventy-nine billion, seven hundred three million, eight hundred eighty-five thousand, six hundred twenty-three".