20300647818 has 64 divisors (see below), whose sum is σ = 47540380032. Its totient is φ = 5710510080.

The previous prime is 20300647799. The next prime is 20300647853. The reversal of 20300647818 is 81874600302.

It is a super-2 number, since 2×20300647818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42021 + ... + 205832.

It is an arithmetic number, because the mean of its divisors is an integer number (742818438).

Almost surely, 2^20300647818 is an apocalyptic number.

20300647818 is an abundant number, since it is smaller than the sum of its proper divisors (27239732214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20300647818 is a wasteful number, since it uses less digits than its factorization.

20300647818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247959.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 20300647818 in words is "twenty billion, three hundred million, six hundred forty-seven thousand, eight hundred eighteen".