15312216493 has 8 divisors (see below), whose sum is σ = 17972640512. Its totient is φ = 12770033616.

The previous prime is 15312216481. The next prime is 15312216499. The reversal of 15312216493 is 39461221351.

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 15312216493 - 2¹⁷ = 15312085421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15312216499) 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, 29560005 + ... + 29560522.

It is an arithmetic number, because the mean of its divisors is an integer number (2246580064).

Almost surely, 2^15312216493 is an apocalyptic number.

It is an amenable number.

15312216493 is a deficient number, since it is larger than the sum of its proper divisors (2660424019).

15312216493 is an equidigital number, since it uses as much as digits as its factorization.

15312216493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59120571.

The product of its digits is 38880, while the sum is 37.

The spelling of 15312216493 in words is "fifteen billion, three hundred twelve million, two hundred sixteen thousand, four hundred ninety-three".