18500020036670 has 32 divisors (see below), whose sum is σ = 33385353942528. Its totient is φ = 7381065346848.

The previous prime is 18500020036649. The next prime is 18500020036679. The reversal of 18500020036670 is 7663002000581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18500020036679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7734767 + ... + 9840053.

It is an arithmetic number, because the mean of its divisors is an integer number (1043292310704).

Almost surely, 2^{18500020036670} is an apocalyptic number.

18500020036670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18500020036670 is a deficient number, since it is larger than the sum of its proper divisors (14885333905858).

18500020036670 is a wasteful number, since it uses less digits than its factorization.

18500020036670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107544.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 18500020036670 in words is "eighteen trillion, five hundred billion, twenty million, thirty-six thousand, six hundred seventy".