22154252544023 has 4 divisors (see below), whose sum is σ = 23457443870160. Its totient is φ = 20851061217888.

The previous prime is 22154252544019. The next prime is 22154252544059. The reversal of 22154252544023 is 32044525245122.

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 22154252544023 - 2² = 22154252544019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154252541023) 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, 651595663043 + ... + 651595663076.

It is an arithmetic number, because the mean of its divisors is an integer number (5864360967540).

Almost surely, 2^{22154252544023} is an apocalyptic number.

22154252544023 is a deficient number, since it is larger than the sum of its proper divisors (1303191326137).

22154252544023 is a wasteful number, since it uses less digits than its factorization.

22154252544023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303191326136.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 22154252544023 its reverse (32044525245122), we get a palindrome (54198777789145).

The spelling of 22154252544023 in words is "twenty-two trillion, one hundred fifty-four billion, two hundred fifty-two million, five hundred forty-four thousand, twenty-three".