20401420453 has 8 divisors (see below), whose sum is σ = 21127910400. Its totient is φ = 19676463408.

The previous prime is 20401420397. The next prime is 20401420513. The reversal of 20401420453 is 35402410402.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401420453 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 (20401420153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356101 + ... + 409402.

It is an arithmetic number, because the mean of its divisors is an integer number (2640988800).

Almost surely, 2^20401420453 is an apocalyptic number.

It is an amenable number.

20401420453 is a deficient number, since it is larger than the sum of its proper divisors (726489947).

20401420453 is an equidigital number, since it uses as much as digits as its factorization.

20401420453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766451.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20401420453 its reverse (35402410402), we get a palindrome (55803830855).

The spelling of 20401420453 in words is "twenty billion, four hundred one million, four hundred twenty thousand, four hundred fifty-three".