20022550307634 has 128 divisors (see below), whose sum is σ = 47097158400000. Its totient is φ = 5672192643264.

The previous prime is 20022550307629. The next prime is 20022550307671. The reversal of 20022550307634 is 43670305522002.

It is a junction number, because it is equal to n+sod(n) for n = 20022550307592 and 20022550307601.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172581457 + ... + 172697435.

It is an arithmetic number, because the mean of its divisors is an integer number (367946550000).

Almost surely, 2^{20022550307634} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022550307634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23548579200000).

20022550307634 is an abundant number, since it is smaller than the sum of its proper divisors (27074608092366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20022550307634 is a wasteful number, since it uses less digits than its factorization.

20022550307634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116717 (or 116703 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 39.

Adding to 20022550307634 its reverse (43670305522002), we get a palindrome (63692855829636).

The spelling of 20022550307634 in words is "twenty trillion, twenty-two billion, five hundred fifty million, three hundred seven thousand, six hundred thirty-four".