21054174395 has 8 divisors (see below), whose sum is σ = 25501131504. Its totient is φ = 16685924704.

The previous prime is 21054174389. The next prime is 21054174413. The reversal of 21054174395 is 59347145012.

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 21054174395 - 2⁸ = 21054174139 is a prime.

It is a Duffinian 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, 19676264 + ... + 19677333.

It is an arithmetic number, because the mean of its divisors is an integer number (3187641438).

Almost surely, 2^21054174395 is an apocalyptic number.

21054174395 is a deficient number, since it is larger than the sum of its proper divisors (4446957109).

21054174395 is a wasteful number, since it uses less digits than its factorization.

21054174395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39353709.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 21054174395 in words is "twenty-one billion, fifty-four million, one hundred seventy-four thousand, three hundred ninety-five".