21614161623 has 16 divisors (see below), whose sum is σ = 29057150976. Its totient is φ = 14290395840.

The previous prime is 21614161619. The next prime is 21614161627. The reversal of 21614161623 is 32616141612.

It is an interprime number because it is at equal distance from previous prime (21614161619) and next prime (21614161627).

It is not a de Polignac number, because 21614161623 - 2² = 21614161619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21614161627) 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 15 ways as a sum of consecutive naturals, for example, 1115488 + ... + 1134698.

It is an arithmetic number, because the mean of its divisors is an integer number (1816071936).

Almost surely, 2^21614161623 is an apocalyptic number.

21614161623 is a deficient number, since it is larger than the sum of its proper divisors (7442989353).

21614161623 is a wasteful number, since it uses less digits than its factorization.

21614161623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22294.

The product of its digits is 10368, while the sum is 33.

The spelling of 21614161623 in words is "twenty-one billion, six hundred fourteen million, one hundred sixty-one thousand, six hundred twenty-three".