20452450413 has 8 divisors (see below), whose sum is σ = 27277808800. Its totient is φ = 13631029488.

The previous prime is 20452450411. The next prime is 20452450439. The reversal of 20452450413 is 31405425402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20452450413 - 2¹ = 20452450411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452450411) 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, 972223 + ... + 993036.

It is an arithmetic number, because the mean of its divisors is an integer number (3409726100).

Almost surely, 2^20452450413 is an apocalyptic number.

It is an amenable number.

20452450413 is a deficient number, since it is larger than the sum of its proper divisors (6825358387).

20452450413 is a wasteful number, since it uses less digits than its factorization.

20452450413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968731.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20452450413 its reverse (31405425402), we get a palindrome (51857875815).

The spelling of 20452450413 in words is "twenty billion, four hundred fifty-two million, four hundred fifty thousand, four hundred thirteen".