20522011332551 has 4 divisors (see below), whose sum is σ = 20522953292712. Its totient is φ = 20521069372392.

The previous prime is 20522011332499. The next prime is 20522011332637. The reversal of 20522011332551 is 15523311022502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20522011332551 - 2²² = 20522007138247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522011352551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470947400 + ... + 470990973.

It is an arithmetic number, because the mean of its divisors is an integer number (5130738323178).

Almost surely, 2^{20522011332551} is an apocalyptic number.

20522011332551 is a deficient number, since it is larger than the sum of its proper divisors (941960161).

20522011332551 is an equidigital number, since it uses as much as digits as its factorization.

20522011332551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941960160.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 20522011332551 in words is "twenty trillion, five hundred twenty-two billion, eleven million, three hundred thirty-two thousand, five hundred fifty-one".