21055623614 has 8 divisors (see below), whose sum is σ = 31591708320. Its totient is φ = 10525054176.

The previous prime is 21055623587. The next prime is 21055623731. The reversal of 21055623614 is 41632655012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369259 + ... + 1384550.

It is an arithmetic number, because the mean of its divisors is an integer number (3948963540).

Almost surely, 2^21055623614 is an apocalyptic number.

21055623614 is a deficient number, since it is larger than the sum of its proper divisors (10536084706).

21055623614 is a wasteful number, since it uses less digits than its factorization.

21055623614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757634.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21055623614 in words is "twenty-one billion, fifty-five million, six hundred twenty-three thousand, six hundred fourteen".