22810721549 has 16 divisors (see below), whose sum is σ = 28609652736. Its totient is φ = 17668143600.

The previous prime is 22810721539. The next prime is 22810721573. The reversal of 22810721549 is 94512701822.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22810721549 is a prime.

It is a super-5 number, since 5×22810721549⁵ (a number of 53 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22810721539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874097 + ... + 899814.

It is an arithmetic number, because the mean of its divisors is an integer number (1788103296).

Almost surely, 2^22810721549 is an apocalyptic number.

It is an amenable number.

22810721549 is a deficient number, since it is larger than the sum of its proper divisors (5798931187).

22810721549 is a wasteful number, since it uses less digits than its factorization.

22810721549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774096.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 22810721549 in words is "twenty-two billion, eight hundred ten million, seven hundred twenty-one thousand, five hundred forty-nine".