20586133928 has 8 divisors (see below), whose sum is σ = 38599001130. Its totient is φ = 10293066960.

The previous prime is 20586133879. The next prime is 20586133933. The reversal of 20586133928 is 82933168502.

It can be written as a sum of positive squares in only one way, i.e., 17015115364 + 3571018564 = 130442^2 + 59758^2 .

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

It is an unprimeable number.

It is a 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, 1286633363 + ... + 1286633378.

Almost surely, 2^20586133928 is an apocalyptic number.

It is an amenable number.

20586133928 is a deficient number, since it is larger than the sum of its proper divisors (18012867202).

20586133928 is a wasteful number, since it uses less digits than its factorization.

20586133928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573266747 (or 2573266743 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 20586133928 in words is "twenty billion, five hundred eighty-six million, one hundred thirty-three thousand, nine hundred twenty-eight".