21752204072274 has 64 divisors (see below), whose sum is σ = 52085690455680. Its totient is φ = 6689240107200.

The previous prime is 21752204072267. The next prime is 21752204072279. The reversal of 21752204072274 is 47227040225712.

21752204072274 is a `hidden beast` number, since 2 + 17 + 5 + 2 + 2 + 0 + 407 + 227 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (21752204072279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7415377 + ... + 9924324.

It is an arithmetic number, because the mean of its divisors is an integer number (813838913370).

Almost surely, 2^{21752204072274} is an apocalyptic number.

21752204072274 is an abundant number, since it is smaller than the sum of its proper divisors (30333486383406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21752204072274 is a wasteful number, since it uses less digits than its factorization.

21752204072274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17341512 (or 17341506 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 45.

Adding to 21752204072274 its reverse (47227040225712), we get a palindrome (68979244297986).

The spelling of 21752204072274 in words is "twenty-one trillion, seven hundred fifty-two billion, two hundred four million, seventy-two thousand, two hundred seventy-four".