40020322453 has 4 divisors (see below), whose sum is σ = 40100524000. Its totient is φ = 39940120908.

The previous prime is 40020322429. The next prime is 40020322457. The reversal of 40020322453 is 35422302004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40020322453 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 (40020322457) 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, 40100025 + ... + 40101022.

It is an arithmetic number, because the mean of its divisors is an integer number (10025131000).

Almost surely, 2^40020322453 is an apocalyptic number.

It is an amenable number.

40020322453 is a deficient number, since it is larger than the sum of its proper divisors (80201547).

40020322453 is an equidigital number, since it uses as much as digits as its factorization.

40020322453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80201546.

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 40020322453 its reverse (35422302004), we get a palindrome (75442624457).

The spelling of 40020322453 in words is "forty billion, twenty million, three hundred twenty-two thousand, four hundred fifty-three".