18355366703705 has 4 divisors (see below), whose sum is σ = 22026440044452. Its totient is φ = 14684293362960.

The previous prime is 18355366703647. The next prime is 18355366703777. The reversal of 18355366703705 is 50730766355381.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5872542828889 + 12482823874816 = 2423333^2 + 3533104^2 .

It is not a de Polignac number, because 18355366703705 - 2²⁰ = 18355365655129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835536670366 + ... + 1835536670375.

It is an arithmetic number, because the mean of its divisors is an integer number (5506610011113).

Almost surely, 2^{18355366703705} is an apocalyptic number.

It is an amenable number.

18355366703705 is a deficient number, since it is larger than the sum of its proper divisors (3671073340747).

18355366703705 is an equidigital number, since it uses as much as digits as its factorization.

18355366703705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671073340746.

The product of its (nonzero) digits is 47628000, while the sum is 59.

The spelling of 18355366703705 in words is "eighteen trillion, three hundred fifty-five billion, three hundred sixty-six million, seven hundred three thousand, seven hundred five".