27585555451 has 2 divisors, whose sum is σ = 27585555452. Its totient is φ = 27585555450.

The previous prime is 27585555407. The next prime is 27585555457. The reversal of 27585555451 is 15455558572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27585555451 - 2²¹ = 27583458299 is a prime.

It is not a weakly prime, because it can be changed into another prime (27585555457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13792777725 + 13792777726.

It is an arithmetic number, because the mean of its divisors is an integer number (13792777726).

Almost surely, 2^27585555451 is an apocalyptic number.

27585555451 is a deficient number, since it is larger than the sum of its proper divisors (1).

27585555451 is an equidigital number, since it uses as much as digits as its factorization.

27585555451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7000000, while the sum is 52.

The spelling of 27585555451 in words is "twenty-seven billion, five hundred eighty-five million, five hundred fifty-five thousand, four hundred fifty-one".