21374418607 has 8 divisors (see below), whose sum is σ = 21808593072. Its totient is φ = 20944608000.

The previous prime is 21374418587. The next prime is 21374418617. The reversal of 21374418607 is 70681447312.

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

It is a cyclic number.

It is not a de Polignac number, because 21374418607 - 2⁷ = 21374418479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374418617) 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, 1081069 + ... + 1100662.

It is an arithmetic number, because the mean of its divisors is an integer number (2726074134).

Almost surely, 2^21374418607 is an apocalyptic number.

21374418607 is a deficient number, since it is larger than the sum of its proper divisors (434174465).

21374418607 is a wasteful number, since it uses less digits than its factorization.

21374418607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181929.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 21374418607 in words is "twenty-one billion, three hundred seventy-four million, four hundred eighteen thousand, six hundred seven".