18720055502035 has 8 divisors (see below), whose sum is σ = 22516187409216. Its totient is φ = 14941297197120.

The previous prime is 18720055502011. The next prime is 18720055502041. The reversal of 18720055502035 is 53020555002781.

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

It is a de Polignac number, because none of the positive numbers 2^k-18720055502035 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18720055501982 and 18720055502000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4343398194 + ... + 4343402503.

It is an arithmetic number, because the mean of its divisors is an integer number (2814523426152).

Almost surely, 2^{18720055502035} is an apocalyptic number.

18720055502035 is a deficient number, since it is larger than the sum of its proper divisors (3796131907181).

18720055502035 is an equidigital number, since it uses as much as digits as its factorization.

18720055502035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8686801133.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 18720055502035 in words is "eighteen trillion, seven hundred twenty billion, fifty-five million, five hundred two thousand, thirty-five".