22551231451 has 4 divisors (see below), whose sum is σ = 25772835952. Its totient is φ = 19329626952.

The previous prime is 22551231427. The next prime is 22551231481. The reversal of 22551231451 is 15413215522.

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 22551231451 - 2¹⁹ = 22550707163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22551231421) 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, 1610802240 + ... + 1610802253.

It is an arithmetic number, because the mean of its divisors is an integer number (6443208988).

Almost surely, 2^22551231451 is an apocalyptic number.

22551231451 is a deficient number, since it is larger than the sum of its proper divisors (3221604501).

22551231451 is an equidigital number, since it uses as much as digits as its factorization.

22551231451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221604500.

The product of its digits is 12000, while the sum is 31.

Adding to 22551231451 its reverse (15413215522), we get a palindrome (37964446973).

The spelling of 22551231451 in words is "twenty-two billion, five hundred fifty-one million, two hundred thirty-one thousand, four hundred fifty-one".