27705006451 has 2 divisors, whose sum is σ = 27705006452. Its totient is φ = 27705006450.

The previous prime is 27705006443. The next prime is 27705006491. The reversal of 27705006451 is 15460050772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27705006451 - 2³ = 27705006443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27705006451.

It is not a weakly prime, because it can be changed into another prime (27705006401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13852503225 + 13852503226.

It is an arithmetic number, because the mean of its divisors is an integer number (13852503226).

Almost surely, 2^27705006451 is an apocalyptic number.

27705006451 is a deficient number, since it is larger than the sum of its proper divisors (1).

27705006451 is an equidigital number, since it uses as much as digits as its factorization.

27705006451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 27705006451 in words is "twenty-seven billion, seven hundred five million, six thousand, four hundred fifty-one".