22648645547 has 4 divisors (see below), whose sum is σ = 24707613336. Its totient is φ = 20589677760.

The previous prime is 22648645529. The next prime is 22648645553. The reversal of 22648645547 is 74554684622.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22648645547 - 2¹⁰ = 22648644523 is a prime.

It is a super-2 number, since 2×22648645547² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22648645517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029483878 + ... + 1029483899.

It is an arithmetic number, because the mean of its divisors is an integer number (6176903334).

Almost surely, 2^22648645547 is an apocalyptic number.

22648645547 is a deficient number, since it is larger than the sum of its proper divisors (2058967789).

22648645547 is a wasteful number, since it uses less digits than its factorization.

22648645547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058967788.

The product of its digits is 12902400, while the sum is 53.

The spelling of 22648645547 in words is "twenty-two billion, six hundred forty-eight million, six hundred forty-five thousand, five hundred forty-seven".