22506451553 has 4 divisors (see below), whose sum is σ = 22509373488. Its totient is φ = 22503529620.

The previous prime is 22506451549. The next prime is 22506451567. The reversal of 22506451553 is 35515460522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22506451553 - 2² = 22506451549 is a prime.

It is a super-2 number, since 2×22506451553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22506451543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449383 + ... + 1464828.

It is an arithmetic number, because the mean of its divisors is an integer number (5627343372).

Almost surely, 2^22506451553 is an apocalyptic number.

It is an amenable number.

22506451553 is a deficient number, since it is larger than the sum of its proper divisors (2921935).

22506451553 is an equidigital number, since it uses as much as digits as its factorization.

22506451553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921934.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 22506451553 in words is "twenty-two billion, five hundred six million, four hundred fifty-one thousand, five hundred fifty-three".