20133561522 has 16 divisors (see below), whose sum is σ = 40386614112. Its totient is φ = 6691272000.

The previous prime is 20133561521. The next prime is 20133561529. The reversal of 20133561522 is 22516533102.

It is a self number, because there is not a number n which added to its sum of digits gives 20133561522.

It is not an unprimeable number, because it can be changed into a prime (20133561521) 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, 4976604 + ... + 4980647.

It is an arithmetic number, because the mean of its divisors is an integer number (2524163382).

Almost surely, 2^20133561522 is an apocalyptic number.

20133561522 is an abundant number, since it is smaller than the sum of its proper divisors (20253052590).

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

20133561522 is a wasteful number, since it uses less digits than its factorization.

20133561522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957593.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20133561522 in words is "twenty billion, one hundred thirty-three million, five hundred sixty-one thousand, five hundred twenty-two".