20022550262557 has 8 divisors (see below), whose sum is σ = 20668582130432. Its totient is φ = 19376527341600.

The previous prime is 20022550262521. The next prime is 20022550262599. The reversal of 20022550262557 is 75526205522002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022550262557 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 (20022550562557) 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, 2468473 + ... + 6792529.

It is an arithmetic number, because the mean of its divisors is an integer number (2583572766304).

Almost surely, 2^{20022550262557} is an apocalyptic number.

It is an amenable number.

20022550262557 is a deficient number, since it is larger than the sum of its proper divisors (646031867875).

20022550262557 is a wasteful number, since it uses less digits than its factorization.

20022550262557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473459.

The product of its (nonzero) digits is 840000, while the sum is 43.

Adding to 20022550262557 its reverse (75526205522002), we get a palindrome (95548755784559).

The spelling of 20022550262557 in words is "twenty trillion, twenty-two billion, five hundred fifty million, two hundred sixty-two thousand, five hundred fifty-seven".