22431420145 has 16 divisors (see below), whose sum is σ = 27305050752. Its totient is φ = 17687057920.

The previous prime is 22431420061. The next prime is 22431420199. The reversal of 22431420145 is 54102413422.

It is not a de Polignac number, because 22431420145 - 2¹³ = 22431411953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513089 + ... + 1527841.

It is an arithmetic number, because the mean of its divisors is an integer number (1706565672).

Almost surely, 2^22431420145 is an apocalyptic number.

It is an amenable number.

22431420145 is a deficient number, since it is larger than the sum of its proper divisors (4873630607).

22431420145 is a wasteful number, since it uses less digits than its factorization.

22431420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19112.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 22431420145 its reverse (54102413422), we get a palindrome (76533833567).

The spelling of 22431420145 in words is "twenty-two billion, four hundred thirty-one million, four hundred twenty thousand, one hundred forty-five".