40323354451 has 4 divisors (see below), whose sum is σ = 40330730304. Its totient is φ = 40315978600.

The previous prime is 40323354419. The next prime is 40323354457. The reversal of 40323354451 is 15445332304.

It is a happy number.

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 40323354451 - 2⁵ = 40323354419 is a prime.

It is a super-2 number, since 2×40323354451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40323354457) 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, 3679720 + ... + 3690661.

It is an arithmetic number, because the mean of its divisors is an integer number (10082682576).

Almost surely, 2^40323354451 is an apocalyptic number.

40323354451 is a deficient number, since it is larger than the sum of its proper divisors (7375853).

40323354451 is an equidigital number, since it uses as much as digits as its factorization.

40323354451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375852.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 40323354451 its reverse (15445332304), we get a palindrome (55768686755).

The spelling of 40323354451 in words is "forty billion, three hundred twenty-three million, three hundred fifty-four thousand, four hundred fifty-one".