20215353903 has 8 divisors (see below), whose sum is σ = 27410649600. Its totient is φ = 13248480408.

The previous prime is 20215353889. The next prime is 20215353931. The reversal of 20215353903 is 30935351202.

It is a happy number.

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

It is not a de Polignac number, because 20215353903 - 2⁶ = 20215353839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215353953) 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, 57105343 + ... + 57105696.

It is an arithmetic number, because the mean of its divisors is an integer number (3426331200).

Almost surely, 2^20215353903 is an apocalyptic number.

20215353903 is a deficient number, since it is larger than the sum of its proper divisors (7195295697).

20215353903 is a wasteful number, since it uses less digits than its factorization.

20215353903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114211101.

The product of its (nonzero) digits is 24300, while the sum is 33.

The spelling of 20215353903 in words is "twenty billion, two hundred fifteen million, three hundred fifty-three thousand, nine hundred three".