21880540427 has 8 divisors (see below), whose sum is σ = 22347328080. Its totient is φ = 21418590240.

The previous prime is 21880540417. The next prime is 21880540433. The reversal of 21880540427 is 72404508812.

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 21880540427 - 2²⁴ = 21863763211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21880540417) 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, 1200224 + ... + 1218317.

It is an arithmetic number, because the mean of its divisors is an integer number (2793416010).

Almost surely, 2^21880540427 is an apocalyptic number.

21880540427 is a deficient number, since it is larger than the sum of its proper divisors (466787653).

21880540427 is a wasteful number, since it uses less digits than its factorization.

21880540427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418733.

The product of its (nonzero) digits is 143360, while the sum is 41.

The spelling of 21880540427 in words is "twenty-one billion, eight hundred eighty million, five hundred forty thousand, four hundred twenty-seven".