22148008457 has 2 divisors, whose sum is σ = 22148008458. Its totient is φ = 22148008456.

The previous prime is 22148008439. The next prime is 22148008471. The reversal of 22148008457 is 75480084122.

22148008457 is nontrivially palindromic in base 7.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18236881936 + 3911126521 = 135044^2 + 62539^2 .

It is a cyclic number.

It is not a de Polignac number, because 22148008457 - 2²² = 22143814153 is a prime.

It is a super-2 number, since 2×22148008457² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22148008957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074004228 + 11074004229.

It is an arithmetic number, because the mean of its divisors is an integer number (11074004229).

Almost surely, 2^22148008457 is an apocalyptic number.

It is an amenable number.

22148008457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22148008457 is an equidigital number, since it uses as much as digits as its factorization.

22148008457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 41.

The spelling of 22148008457 in words is "twenty-two billion, one hundred forty-eight million, eight thousand, four hundred fifty-seven".