21034553307 has 8 divisors (see below), whose sum is σ = 29522180160. Its totient is φ = 13284981000.

The previous prime is 21034553291. The next prime is 21034553311. The reversal of 21034553307 is 70335543012.

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

It is not a de Polignac number, because 21034553307 - 2⁴ = 21034553291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21034553347) 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, 184513569 + ... + 184513682.

It is an arithmetic number, because the mean of its divisors is an integer number (3690272520).

Almost surely, 2^21034553307 is an apocalyptic number.

21034553307 is a deficient number, since it is larger than the sum of its proper divisors (8487626853).

21034553307 is a wasteful number, since it uses less digits than its factorization.

21034553307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369027273.

The product of its (nonzero) digits is 37800, while the sum is 33.

The spelling of 21034553307 in words is "twenty-one billion, thirty-four million, five hundred fifty-three thousand, three hundred seven".