21040307153 has 8 divisors (see below), whose sum is σ = 22154145600. Its totient is φ = 19927114128.

The previous prime is 21040307129. The next prime is 21040307179. The reversal of 21040307153 is 35170304012.

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 21040307153 - 2⁶ = 21040307089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21040307653) 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, 93701 + ... + 225522.

It is an arithmetic number, because the mean of its divisors is an integer number (2769268200).

Almost surely, 2^21040307153 is an apocalyptic number.

It is an amenable number.

21040307153 is a deficient number, since it is larger than the sum of its proper divisors (1113838447).

21040307153 is a wasteful number, since it uses less digits than its factorization.

21040307153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322711.

The product of its (nonzero) digits is 2520, while the sum is 26.

The spelling of 21040307153 in words is "twenty-one billion, forty million, three hundred seven thousand, one hundred fifty-three".