20352834664 has 8 divisors (see below), whose sum is σ = 38161565010. Its totient is φ = 10176417328.

The previous prime is 20352834631. The next prime is 20352834679. The reversal of 20352834664 is 46643825302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15886585764 + 4466248900 = 126042^2 + 66830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20352834664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272052159 + ... + 1272052174.

Almost surely, 2^20352834664 is an apocalyptic number.

It is an amenable number.

20352834664 is a deficient number, since it is larger than the sum of its proper divisors (17808730346).

20352834664 is a wasteful number, since it uses less digits than its factorization.

20352834664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544104339 (or 2544104335 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 20352834664 in words is "twenty billion, three hundred fifty-two million, eight hundred thirty-four thousand, six hundred sixty-four".