20007486816 has 24 divisors (see below), whose sum is σ = 52519653144. Its totient is φ = 6669162240.

The previous prime is 20007486797. The next prime is 20007486841. The reversal of 20007486816 is 61868470002.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104205565 + ... + 104205756.

It is an arithmetic number, because the mean of its divisors is an integer number (2188318881).

Almost surely, 2^20007486816 is an apocalyptic number.

It is an amenable number.

20007486816 is an abundant number, since it is smaller than the sum of its proper divisors (32512166328).

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

20007486816 is a wasteful number, since it uses less digits than its factorization.

20007486816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208411334 (or 208411326 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 20007486816 in words is "twenty billion, seven million, four hundred eighty-six thousand, eight hundred sixteen".