22540041847 has 4 divisors (see below), whose sum is σ = 22546425240. Its totient is φ = 22533658456.

The previous prime is 22540041761. The next prime is 22540041857. The reversal of 22540041847 is 74814004522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540041847 is a prime.

It is a super-2 number, since 2×22540041847² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540041857) 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, 3186397 + ... + 3193462.

It is an arithmetic number, because the mean of its divisors is an integer number (5636606310).

Almost surely, 2^22540041847 is an apocalyptic number.

22540041847 is a deficient number, since it is larger than the sum of its proper divisors (6383393).

22540041847 is an equidigital number, since it uses as much as digits as its factorization.

22540041847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383392.

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 22540041847 in words is "twenty-two billion, five hundred forty million, forty-one thousand, eight hundred forty-seven".