27800746451 has 2 divisors, whose sum is σ = 27800746452. Its totient is φ = 27800746450.

The previous prime is 27800746429. The next prime is 27800746471. The reversal of 27800746451 is 15464700872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27800746451 is a prime.

It is not a weakly prime, because it can be changed into another prime (27800746411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900373225 + 13900373226.

It is an arithmetic number, because the mean of its divisors is an integer number (13900373226).

Almost surely, 2^27800746451 is an apocalyptic number.

27800746451 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800746451 is an equidigital number, since it uses as much as digits as its factorization.

27800746451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 27800746451 in words is "twenty-seven billion, eight hundred million, seven hundred forty-six thousand, four hundred fifty-one".