22751388649 has 4 divisors (see below), whose sum is σ = 24819696720. Its totient is φ = 20683080580.

The previous prime is 22751388637. The next prime is 22751388661. The reversal of 22751388649 is 94688315722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22751388637) and next prime (22751388661).

It is a cyclic number.

It is not a de Polignac number, because 22751388649 - 2⁵ = 22751388617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22751388649.

It is not an unprimeable number, because it can be changed into a prime (22751388749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1034154019 + ... + 1034154040.

It is an arithmetic number, because the mean of its divisors is an integer number (6204924180).

Almost surely, 2^22751388649 is an apocalyptic number.

It is an amenable number.

22751388649 is a deficient number, since it is larger than the sum of its proper divisors (2068308071).

22751388649 is a wasteful number, since it uses less digits than its factorization.

22751388649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068308070.

The product of its digits is 5806080, while the sum is 55.

The spelling of 22751388649 in words is "twenty-two billion, seven hundred fifty-one million, three hundred eighty-eight thousand, six hundred forty-nine".