20086542529 has 9 divisors (see below), whose sum is σ = 20205010723. Its totient is φ = 19968767392.

The previous prime is 20086542527. The next prime is 20086542533. The reversal of 20086542529 is 92524568002.

The square root of 20086542529 is 141727.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12350988225 + 7735554304 = 111135^2 + 87952^2 .

It is not a de Polignac number, because 20086542529 - 2¹ = 20086542527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20086542523) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33872457 + ... + 33873049.

Almost surely, 2^20086542529 is an apocalyptic number.

20086542529 is the 141727-th square number.

20086542529 is the 70864-th centered octagonal number.

It is an amenable number.

20086542529 is a deficient number, since it is larger than the sum of its proper divisors (118468194).

20086542529 is an frugal number, since it uses more digits than its factorization.

20086542529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 20086542529 in words is "twenty billion, eighty-six million, five hundred forty-two thousand, five hundred twenty-nine".