20901860203 has 16 divisors (see below), whose sum is σ = 24585442560. Its totient is φ = 17399997216.

The previous prime is 20901860201. The next prime is 20901860219. The reversal of 20901860203 is 30206810902.

It is not a de Polignac number, because 20901860203 - 2¹ = 20901860201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20901860201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270600 + ... + 339157.

It is an arithmetic number, because the mean of its divisors is an integer number (1536590160).

Almost surely, 2^20901860203 is an apocalyptic number.

20901860203 is a deficient number, since it is larger than the sum of its proper divisors (3683582357).

20901860203 is an equidigital number, since it uses as much as digits as its factorization.

20901860203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609906.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 20901860203 in words is "twenty billion, nine hundred one million, eight hundred sixty thousand, two hundred three".