21752422827 has 8 divisors (see below), whose sum is σ = 29031696960. Its totient is φ = 14487381960.

The previous prime is 21752422807. The next prime is 21752422837. The reversal of 21752422827 is 72822425712.

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

It is not a de Polignac number, because 21752422827 - 2²⁴ = 21735645611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21752422807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3554749 + ... + 3560862.

It is an arithmetic number, because the mean of its divisors is an integer number (3628962120).

Almost surely, 2^21752422827 is an apocalyptic number.

21752422827 is a deficient number, since it is larger than the sum of its proper divisors (7279274133).

21752422827 is a wasteful number, since it uses less digits than its factorization.

21752422827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7116633.

The product of its digits is 250880, while the sum is 42.

The spelling of 21752422827 in words is "twenty-one billion, seven hundred fifty-two million, four hundred twenty-two thousand, eight hundred twenty-seven".