20530617568527 has 16 divisors (see below), whose sum is σ = 29863168564608. Its totient is φ = 12442610150880.

The previous prime is 20530617568523. The next prime is 20530617568553. The reversal of 20530617568527 is 72586571603502.

It is not a de Polignac number, because 20530617568527 - 2² = 20530617568523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530617568523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2480868 + ... + 6871385.

It is an arithmetic number, because the mean of its divisors is an integer number (1866448035288).

Almost surely, 2^{20530617568527} is an apocalyptic number.

20530617568527 is a deficient number, since it is larger than the sum of its proper divisors (9332550996081).

20530617568527 is a wasteful number, since it uses less digits than its factorization.

20530617568527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9418790.

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 20530617568527 in words is "twenty trillion, five hundred thirty billion, six hundred seventeen million, five hundred sixty-eight thousand, five hundred twenty-seven".