22515320145 has 8 divisors (see below), whose sum is σ = 36024512256. Its totient is φ = 12008170736.

The previous prime is 22515320141. The next prime is 22515320153. The reversal of 22515320145 is 54102351522.

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 22515320145 - 2² = 22515320141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22515320141) 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, 750510657 + ... + 750510686.

It is an arithmetic number, because the mean of its divisors is an integer number (4503064032).

Almost surely, 2^22515320145 is an apocalyptic number.

It is an amenable number.

22515320145 is a deficient number, since it is larger than the sum of its proper divisors (13509192111).

22515320145 is a wasteful number, since it uses less digits than its factorization.

22515320145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501021351.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 22515320145 its reverse (54102351522), we get a palindrome (76617671667).

The spelling of 22515320145 in words is "twenty-two billion, five hundred fifteen million, three hundred twenty thousand, one hundred forty-five".