20310327864 has 24 divisors (see below), whose sum is σ = 55007138160. Its totient is φ = 6770109264.

The previous prime is 20310327811. The next prime is 20310327871. The reversal of 20310327864 is 46872301302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141043872 + ... + 141044015.

It is an arithmetic number, because the mean of its divisors is an integer number (2291964090).

Almost surely, 2^20310327864 is an apocalyptic number.

20310327864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20310327864 is an abundant number, since it is smaller than the sum of its proper divisors (34696810296).

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

20310327864 is a wasteful number, since it uses less digits than its factorization.

20310327864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282087899 (or 282087892 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20310327864 in words is "twenty billion, three hundred ten million, three hundred twenty-seven thousand, eight hundred sixty-four".