15616493387 has 8 divisors (see below), whose sum is σ = 17116917312. Its totient is φ = 14129526600.

The previous prime is 15616493383. The next prime is 15616493419. The reversal of 15616493387 is 78339461651.

15616493387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15616493387 - 2² = 15616493383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15616493383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3361853 + ... + 3366494.

It is an arithmetic number, because the mean of its divisors is an integer number (2139614664).

Almost surely, 2^15616493387 is an apocalyptic number.

15616493387 is a deficient number, since it is larger than the sum of its proper divisors (1500423925).

15616493387 is a wasteful number, since it uses less digits than its factorization.

15616493387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728569.

The product of its digits is 3265920, while the sum is 53.

The spelling of 15616493387 in words is "fifteen billion, six hundred sixteen million, four hundred ninety-three thousand, three hundred eighty-seven".