40320421044431 has 8 divisors (see below), whose sum is σ = 44144707782864. Its totient is φ = 36522599958720.

The previous prime is 40320421044427. The next prime is 40320421044457. The reversal of 40320421044431 is 13444012402304.

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

It is a cyclic number.

It is not a de Polignac number, because 40320421044431 - 2² = 40320421044427 is a prime.

It is a super-2 number, since 2×40320421044431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320421044131) 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, 6616409990 + ... + 6616416083.

It is an arithmetic number, because the mean of its divisors is an integer number (5518088472858).

Almost surely, 2^{40320421044431} is an apocalyptic number.

40320421044431 is a deficient number, since it is larger than the sum of its proper divisors (3824286738433).

40320421044431 is a wasteful number, since it uses less digits than its factorization.

40320421044431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232826361.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 40320421044431 its reverse (13444012402304), we get a palindrome (53764433446735).

The spelling of 40320421044431 in words is "forty trillion, three hundred twenty billion, four hundred twenty-one million, forty-four thousand, four hundred thirty-one".