20659470884 has 24 divisors (see below), whose sum is σ = 39005112888. Its totient is φ = 9518008320.

The previous prime is 20659470877. The next prime is 20659470901. The reversal of 20659470884 is 48807495602.

It can be written as a sum of positive squares in 4 ways, for example, as 572644900 + 20086825984 = 23930^2 + 141728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327677 + ... + 385604.

It is an arithmetic number, because the mean of its divisors is an integer number (1625213037).

Almost surely, 2^20659470884 is an apocalyptic number.

It is an amenable number.

20659470884 is a deficient number, since it is larger than the sum of its proper divisors (18345642004).

20659470884 is a wasteful number, since it uses less digits than its factorization.

20659470884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713855 (or 713853 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 20659470884 in words is "twenty billion, six hundred fifty-nine million, four hundred seventy thousand, eight hundred eighty-four".