18277019994643 has 8 divisors (see below), whose sum is σ = 18295428640896. Its totient is φ = 18258612734400.

The previous prime is 18277019994613. The next prime is 18277019994647. The reversal of 18277019994643 is 34649991077281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18277019994643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18277019994647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27135813 + ... + 27801193.

It is an arithmetic number, because the mean of its divisors is an integer number (2286928580112).

Almost surely, 2^{18277019994643} is an apocalyptic number.

18277019994643 is a deficient number, since it is larger than the sum of its proper divisors (18408646253).

18277019994643 is a wasteful number, since it uses less digits than its factorization.

18277019994643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693005.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 18277019994643 in words is "eighteen trillion, two hundred seventy-seven billion, nineteen million, nine hundred ninety-four thousand, six hundred forty-three".