21514451310244 has 12 divisors (see below), whose sum is σ = 38568589544268. Its totient is φ = 10494854297600.

The previous prime is 21514451310239. The next prime is 21514451310299. The reversal of 21514451310244 is 44201315441512.

It can be written as a sum of positive squares in 2 ways, for example, as 7192480334400 + 14321970975844 = 2681880^2 + 3784438^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65592839197 + ... + 65592839524.

It is an arithmetic number, because the mean of its divisors is an integer number (3214049128689).

Almost surely, 2^{21514451310244} is an apocalyptic number.

It is an amenable number.

21514451310244 is a deficient number, since it is larger than the sum of its proper divisors (17054138234024).

21514451310244 is a wasteful number, since it uses less digits than its factorization.

21514451310244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131185678766 (or 131185678764 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 21514451310244 its reverse (44201315441512), we get a palindrome (65715766751756).

The spelling of 21514451310244 in words is "twenty-one trillion, five hundred fourteen billion, four hundred fifty-one million, three hundred ten thousand, two hundred forty-four".