21374404264673 has 8 divisors (see below), whose sum is σ = 22337571009600. Its totient is φ = 20414057921488.

The previous prime is 21374404264643. The next prime is 21374404264687. The reversal of 21374404264673 is 37646240447312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21374404264673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21374404264643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705084938 + ... + 705115251.

It is an arithmetic number, because the mean of its divisors is an integer number (2792196376200).

Almost surely, 2^{21374404264673} is an apocalyptic number.

21374404264673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21374404264673 is a deficient number, since it is larger than the sum of its proper divisors (963166744927).

21374404264673 is a wasteful number, since it uses less digits than its factorization.

21374404264673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410200871.

The product of its (nonzero) digits is 16257024, while the sum is 53.

The spelling of 21374404264673 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred four million, two hundred sixty-four thousand, six hundred seventy-three".