16231453613 has 8 divisors (see below), whose sum is σ = 17778874680. Its totient is φ = 14749880320.

The previous prime is 16231453571. The next prime is 16231453621. The reversal of 16231453613 is 31635413261.

It can be written as a sum of positive squares in 4 ways, for example, as 9793477444 + 6437976169 = 98962^2 + 80237^2 .

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 16231453613 - 2¹⁸ = 16231191469 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 (16231453643) 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, 16461428 + ... + 16462413.

It is an arithmetic number, because the mean of its divisors is an integer number (2222359335).

Almost surely, 2^16231453613 is an apocalyptic number.

It is an amenable number.

16231453613 is a deficient number, since it is larger than the sum of its proper divisors (1547421067).

16231453613 is a wasteful number, since it uses less digits than its factorization.

16231453613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32923887.

The product of its digits is 38880, while the sum is 35.

Adding to 16231453613 its reverse (31635413261), we get a palindrome (47866866874).

The spelling of 16231453613 in words is "sixteen billion, two hundred thirty-one million, four hundred fifty-three thousand, six hundred thirteen".