20383536136 has 8 divisors (see below), whose sum is σ = 38219130270. Its totient is φ = 10191768064.

The previous prime is 20383536119. The next prime is 20383536149. The reversal of 20383536136 is 63163538302.

It can be written as a sum of positive squares in only one way, i.e., 11773552036 + 8609984100 = 108506^2 + 92790^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1273971001 + ... + 1273971016.

Almost surely, 2^20383536136 is an apocalyptic number.

It is an amenable number.

20383536136 is a deficient number, since it is larger than the sum of its proper divisors (17835594134).

20383536136 is a wasteful number, since it uses less digits than its factorization.

20383536136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547942023 (or 2547942019 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 20383536136 in words is "twenty billion, three hundred eighty-three million, five hundred thirty-six thousand, one hundred thirty-six".