27442563451 has 2 divisors, whose sum is σ = 27442563452. Its totient is φ = 27442563450.

The previous prime is 27442563437. The next prime is 27442563457. The reversal of 27442563451 is 15436524472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27442563451 - 2²³ = 27434174843 is a prime.

It is a super-2 number, since 2×27442563451² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27442563398 and 27442563407.

It is not a weakly prime, because it can be changed into another prime (27442563457) 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 as a sum of consecutive naturals, namely, 13721281725 + 13721281726.

It is an arithmetic number, because the mean of its divisors is an integer number (13721281726).

Almost surely, 2^27442563451 is an apocalyptic number.

27442563451 is a deficient number, since it is larger than the sum of its proper divisors (1).

27442563451 is an equidigital number, since it uses as much as digits as its factorization.

27442563451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 43.

The spelling of 27442563451 in words is "twenty-seven billion, four hundred forty-two million, five hundred sixty-three thousand, four hundred fifty-one".