16431075621365 has 8 divisors (see below), whose sum is σ = 19722410813088. Its totient is φ = 13141447118800.

The previous prime is 16431075621361. The next prime is 16431075621461. The reversal of 16431075621365 is 56312657013461.

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

It is not a de Polignac number, because 16431075621365 - 2² = 16431075621361 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 (16431075621361) 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, 426651107 + ... + 426689616.

It is an arithmetic number, because the mean of its divisors is an integer number (2465301351636).

Almost surely, 2^{16431075621365} is an apocalyptic number.

It is an amenable number.

16431075621365 is a deficient number, since it is larger than the sum of its proper divisors (3291335191723).

16431075621365 is an equidigital number, since it uses as much as digits as its factorization.

16431075621365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853344579.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 16431075621365 in words is "sixteen trillion, four hundred thirty-one billion, seventy-five million, six hundred twenty-one thousand, three hundred sixty-five".