22444144723057 has 8 divisors (see below), whose sum is σ = 23784375401640. Its totient is φ = 21141667021440.

The previous prime is 22444144723019. The next prime is 22444144723103. The reversal of 22444144723057 is 75032744144422.

It can be written as a sum of positive squares in 4 ways, for example, as 3560331229456 + 18883813493601 = 1886884^2 + 4345551^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22444144723057 - 2¹⁹ = 22444144198769 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 22444144723057.

It is not an unprimeable number, because it can be changed into a prime (22444144723457) 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, 9438243018 + ... + 9438245395.

It is an arithmetic number, because the mean of its divisors is an integer number (2973046925205).

Almost surely, 2^{22444144723057} is an apocalyptic number.

It is an amenable number.

22444144723057 is a deficient number, since it is larger than the sum of its proper divisors (1340230678583).

22444144723057 is a wasteful number, since it uses less digits than its factorization.

22444144723057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18876488483.

The product of its (nonzero) digits is 6021120, while the sum is 49.

Adding to 22444144723057 its reverse (75032744144422), we get a palindrome (97476888867479).

The spelling of 22444144723057 in words is "twenty-two trillion, four hundred forty-four billion, one hundred forty-four million, seven hundred twenty-three thousand, fifty-seven".