27705400843403 has 4 divisors (see below), whose sum is σ = 28349712490968. Its totient is φ = 27061089195840.

The previous prime is 27705400843399. The next prime is 27705400843447. The reversal of 27705400843403 is 30434800450772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27705400843403 - 2² = 27705400843399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27705400843903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322155823718 + ... + 322155823803.

It is an arithmetic number, because the mean of its divisors is an integer number (7087428122742).

Almost surely, 2^{27705400843403} is an apocalyptic number.

27705400843403 is a deficient number, since it is larger than the sum of its proper divisors (644311647565).

27705400843403 is an equidigital number, since it uses as much as digits as its factorization.

27705400843403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644311647564.

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 27705400843403 in words is "twenty-seven trillion, seven hundred five billion, four hundred million, eight hundred forty-three thousand, four hundred three".