23522201668 has 18 divisors (see below), whose sum is σ = 47884482366. Its totient is φ = 10080943488.

The previous prime is 23522201663. The next prime is 23522201671. The reversal of 23522201668 is 86610222532.

It can be written as a sum of positive squares in only one way, i.e., 22473607744 + 1048593924 = 149912^2 + 32382^2 .

It is not an unprimeable number, because it can be changed into a prime (23522201663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60005421 + ... + 60005812.

Almost surely, 2^23522201668 is an apocalyptic number.

23522201668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23522201668 is an abundant number, since it is smaller than the sum of its proper divisors (24362280698).

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

23522201668 is a wasteful number, since it uses less digits than its factorization.

23522201668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120011251 (or 120011242 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 23522201668 in words is "twenty-three billion, five hundred twenty-two million, two hundred one thousand, six hundred sixty-eight".