21053423422399 has 8 divisors (see below), whose sum is σ = 21169689984720. Its totient is φ = 20937474096000.

The previous prime is 21053423422391. The next prime is 21053423422433. The reversal of 21053423422399 is 99322432435012.

It is a happy number.

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 21053423422399 - 2³ = 21053423422391 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 (21053423422391) 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, 79175884 + ... + 79441345.

It is an arithmetic number, because the mean of its divisors is an integer number (2646211248090).

Almost surely, 2^{21053423422399} is an apocalyptic number.

21053423422399 is a deficient number, since it is larger than the sum of its proper divisors (116266562321).

21053423422399 is a wasteful number, since it uses less digits than its factorization.

21053423422399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158617961.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 21053423422399 in words is "twenty-one trillion, fifty-three billion, four hundred twenty-three million, four hundred twenty-two thousand, three hundred ninety-nine".