21874573514 has 4 divisors (see below), whose sum is σ = 32811860274. Its totient is φ = 10937286756.

The previous prime is 21874573477. The next prime is 21874573519. The reversal of 21874573514 is 41537547812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20088243289 + 1786330225 = 141733^2 + 42265^2 .

It is not an unprimeable number, because it can be changed into a prime (21874573519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5468643377 + ... + 5468643380.

Almost surely, 2^21874573514 is an apocalyptic number.

21874573514 is a deficient number, since it is larger than the sum of its proper divisors (10937286760).

21874573514 is a wasteful number, since it uses less digits than its factorization.

21874573514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10937286759.

The product of its digits is 940800, while the sum is 47.

The spelling of 21874573514 in words is "twenty-one billion, eight hundred seventy-four million, five hundred seventy-three thousand, five hundred fourteen".