21616051200405 has 8 divisors (see below), whose sum is σ = 34585681920672. Its totient is φ = 11528560640208.

The previous prime is 21616051200361. The next prime is 21616051200413. The reversal of 21616051200405 is 50400215061612.

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

It is not a de Polignac number, because 21616051200405 - 2²⁵ = 21616017645973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720535039999 + ... + 720535040028.

It is an arithmetic number, because the mean of its divisors is an integer number (4323210240084).

Almost surely, 2^{21616051200405} is an apocalyptic number.

It is an amenable number.

21616051200405 is a deficient number, since it is larger than the sum of its proper divisors (12969630720267).

21616051200405 is a wasteful number, since it uses less digits than its factorization.

21616051200405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441070080035.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 21616051200405 in words is "twenty-one trillion, six hundred sixteen billion, fifty-one million, two hundred thousand, four hundred five".