20903350353 has 4 divisors (see below), whose sum is σ = 27871133808. Its totient is φ = 13935566900.

The previous prime is 20903350283. The next prime is 20903350357. The reversal of 20903350353 is 35305330902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20903350353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20903350357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3483891723 + ... + 3483891728.

It is an arithmetic number, because the mean of its divisors is an integer number (6967783452).

Almost surely, 2^20903350353 is an apocalyptic number.

It is an amenable number.

20903350353 is a deficient number, since it is larger than the sum of its proper divisors (6967783455).

20903350353 is an equidigital number, since it uses as much as digits as its factorization.

20903350353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967783454.

The product of its (nonzero) digits is 36450, while the sum is 33.

The spelling of 20903350353 in words is "twenty billion, nine hundred three million, three hundred fifty thousand, three hundred fifty-three".