20402372327 has 4 divisors (see below), whose sum is σ = 20563021056. Its totient is φ = 20241723600.

The previous prime is 20402372321. The next prime is 20402372423. The reversal of 20402372327 is 72327320402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20402372327 - 2²⁶ = 20335263463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20402372293 and 20402372302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402372321) 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, 80324174 + ... + 80324427.

It is an arithmetic number, because the mean of its divisors is an integer number (5140755264).

Almost surely, 2^20402372327 is an apocalyptic number.

20402372327 is a deficient number, since it is larger than the sum of its proper divisors (160648729).

20402372327 is a wasteful number, since it uses less digits than its factorization.

20402372327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160648728.

The product of its (nonzero) digits is 28224, while the sum is 32.

Adding to 20402372327 its reverse (72327320402), we get a palindrome (92729692729).

The spelling of 20402372327 in words is "twenty billion, four hundred two million, three hundred seventy-two thousand, three hundred twenty-seven".