21514451310245 has 8 divisors (see below), whose sum is σ = 26650159042560. Its totient is φ = 16656349401360.

The previous prime is 21514451310239. The next prime is 21514451310299. The reversal of 21514451310245 is 54201315441512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21514451310245 - 2¹² = 21514451306149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21514451310199 and 21514451310208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69401455685 + ... + 69401455994.

It is an arithmetic number, because the mean of its divisors is an integer number (3331269880320).

Almost surely, 2^{21514451310245} is an apocalyptic number.

It is an amenable number.

21514451310245 is a deficient number, since it is larger than the sum of its proper divisors (5135707732315).

21514451310245 is a wasteful number, since it uses less digits than its factorization.

21514451310245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138802911715.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 21514451310245 its reverse (54201315441512), we get a palindrome (75715766751757).

The spelling of 21514451310245 in words is "twenty-one trillion, five hundred fourteen billion, four hundred fifty-one million, three hundred ten thousand, two hundred forty-five".