20555168336 has 10 divisors (see below), whose sum is σ = 39825638682. Its totient is φ = 10277584160.

The previous prime is 20555168321. The next prime is 20555168341. The reversal of 20555168336 is 63386155502.

It can be written as a sum of positive squares in only one way, i.e., 20490204736 + 64963600 = 143144^2 + 8060^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642348995 + ... + 642349026.

Almost surely, 2^20555168336 is an apocalyptic number.

It is an amenable number.

20555168336 is a deficient number, since it is larger than the sum of its proper divisors (19270470346).

20555168336 is a wasteful number, since it uses less digits than its factorization.

20555168336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284698029 (or 1284698023 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20555168336 in words is "twenty billion, five hundred fifty-five million, one hundred sixty-eight thousand, three hundred thirty-six".