21716362254406 has 8 divisors (see below), whose sum is σ = 32582829972744. Its totient is φ = 10855418930160.

The previous prime is 21716362254383. The next prime is 21716362254437. The reversal of 21716362254406 is 60445226361712.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21716362254406.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1381088695 + ... + 1381104418.

It is an arithmetic number, because the mean of its divisors is an integer number (4072853746593).

Almost surely, 2^{21716362254406} is an apocalyptic number.

21716362254406 is a deficient number, since it is larger than the sum of its proper divisors (10866467718338).

21716362254406 is a wasteful number, since it uses less digits than its factorization.

21716362254406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762197046.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 21716362254406 in words is "twenty-one trillion, seven hundred sixteen billion, three hundred sixty-two million, two hundred fifty-four thousand, four hundred six".