20232120215644 has 12 divisors (see below), whose sum is σ = 35531320663384. Its totient is φ = 10080314311824.

The previous prime is 20232120215641. The next prime is 20232120215701. The reversal of 20232120215644 is 44651202123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20232120215641) 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, 8936447727 + ... + 8936449990.

Almost surely, 2^{20232120215644} is an apocalyptic number.

It is an amenable number.

20232120215644 is a deficient number, since it is larger than the sum of its proper divisors (15299200447740).

20232120215644 is a wasteful number, since it uses less digits than its factorization.

20232120215644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17872898004 (or 17872898002 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 20232120215644 its reverse (44651202123202), we get a palindrome (64883322338846).

The spelling of 20232120215644 in words is "twenty trillion, two hundred thirty-two billion, one hundred twenty million, two hundred fifteen thousand, six hundred forty-four".