21274552235 has 8 divisors (see below), whose sum is σ = 25538766000. Its totient is φ = 17013439584.

The previous prime is 21274552223. The next prime is 21274552241. The reversal of 21274552235 is 53225547212.

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 21274552235 - 2⁴ = 21274552219 is a prime.

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, 760157 + ... + 787646.

It is an arithmetic number, because the mean of its divisors is an integer number (3192345750).

Almost surely, 2^21274552235 is an apocalyptic number.

21274552235 is a deficient number, since it is larger than the sum of its proper divisors (4264213765).

21274552235 is a wasteful number, since it uses less digits than its factorization.

21274552235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550557.

The product of its digits is 168000, while the sum is 38.

The spelling of 21274552235 in words is "twenty-one billion, two hundred seventy-four million, five hundred fifty-two thousand, two hundred thirty-five".