21903937275 has 36 divisors (see below), whose sum is σ = 39806047736. Its totient is φ = 10620086400.

The previous prime is 21903937273. The next prime is 21903937357. The reversal of 21903937275 is 57273930912.

It is not a de Polignac number, because 21903937275 - 2¹ = 21903937273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21903937273) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1197754 + ... + 1215903.

Almost surely, 2^21903937275 is an apocalyptic number.

21903937275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21903937275 is a deficient number, since it is larger than the sum of its proper divisors (17902110461).

21903937275 is a wasteful number, since it uses less digits than its factorization.

21903937275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413692 (or 2413676 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 21903937275 in words is "twenty-one billion, nine hundred three million, nine hundred thirty-seven thousand, two hundred seventy-five".