21416713455 has 32 divisors (see below), whose sum is σ = 36114163200. Its totient is φ = 10807903872.

The previous prime is 21416713433. The next prime is 21416713477. The reversal of 21416713455 is 55431761412.

It is an interprime number because it is at equal distance from previous prime (21416713433) and next prime (21416713477).

It is not a de Polignac number, because 21416713455 - 2¹⁰ = 21416712431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190942 + ... + 281588.

It is an arithmetic number, because the mean of its divisors is an integer number (1128567600).

Almost surely, 2^21416713455 is an apocalyptic number.

21416713455 is a deficient number, since it is larger than the sum of its proper divisors (14697449745).

21416713455 is a wasteful number, since it uses less digits than its factorization.

21416713455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91503.

The product of its digits is 100800, while the sum is 39.

The spelling of 21416713455 in words is "twenty-one billion, four hundred sixteen million, seven hundred thirteen thousand, four hundred fifty-five".