20520236000545 has 8 divisors (see below), whose sum is σ = 24626556766080. Its totient is φ = 16414673090160.

The previous prime is 20520236000497. The next prime is 20520236000557. The reversal of 20520236000545 is 54500063202502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20520236000545 - 2¹¹ = 20520235998497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20520236000545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189404215 + ... + 189512524.

It is an arithmetic number, because the mean of its divisors is an integer number (3078319595760).

Almost surely, 2^{20520236000545} is an apocalyptic number.

It is an amenable number.

20520236000545 is a deficient number, since it is larger than the sum of its proper divisors (4106320765535).

20520236000545 is a wasteful number, since it uses less digits than its factorization.

20520236000545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378927575.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 20520236000545 in words is "twenty trillion, five hundred twenty billion, two hundred thirty-six million, five hundred forty-five", and thus it is an aban number.