20532313451 has 12 divisors (see below), whose sum is σ = 22706271072. Its totient is φ = 18549644256.

The previous prime is 20532313343. The next prime is 20532313481. The reversal of 20532313451 is 15431323502.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20532313451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20532313481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1284536 + ... + 1300421.

It is an arithmetic number, because the mean of its divisors is an integer number (1892189256).

Almost surely, 2^20532313451 is an apocalyptic number.

20532313451 is a deficient number, since it is larger than the sum of its proper divisors (2173957621).

20532313451 is a wasteful number, since it uses less digits than its factorization.

20532313451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585030 (or 2585017 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 20532313451 its reverse (15431323502), we get a palindrome (35963636953).

The spelling of 20532313451 in words is "twenty billion, five hundred thirty-two million, three hundred thirteen thousand, four hundred fifty-one".