20524565220261 has 8 divisors (see below), whose sum is σ = 27366115171200. Its totient is φ = 13683029374752.

The previous prime is 20524565220251. The next prime is 20524565220281. The reversal of 20524565220261 is 16202256542502.

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

It is not a de Polignac number, because 20524565220261 - 2¹³ = 20524565212069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20524565220221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538065 + ... + 6429513.

It is an arithmetic number, because the mean of its divisors is an integer number (3420764396400).

Almost surely, 2^{20524565220261} is an apocalyptic number.

It is an amenable number.

20524565220261 is a deficient number, since it is larger than the sum of its proper divisors (6841549950939).

20524565220261 is a wasteful number, since it uses less digits than its factorization.

20524565220261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052715.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 20524565220261 in words is "twenty trillion, five hundred twenty-four billion, five hundred sixty-five million, two hundred twenty thousand, two hundred sixty-one".