21436516883 has 8 divisors (see below), whose sum is σ = 21772935936. Its totient is φ = 21101056200.

The previous prime is 21436516861. The next prime is 21436516939. The reversal of 21436516883 is 38861563412.

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 21436516883 - 2²² = 21432322579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21436512883) 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, 194441 + ... + 284042.

It is an arithmetic number, because the mean of its divisors is an integer number (2721616992).

Almost surely, 2^21436516883 is an apocalyptic number.

21436516883 is a deficient number, since it is larger than the sum of its proper divisors (336419053).

21436516883 is an equidigital number, since it uses as much as digits as its factorization.

21436516883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479185.

The product of its digits is 829440, while the sum is 47.

The spelling of 21436516883 in words is "twenty-one billion, four hundred thirty-six million, five hundred sixteen thousand, eight hundred eighty-three".