16155165385 has 24 divisors (see below), whose sum is σ = 20296962504. Its totient is φ = 12343161600.

The previous prime is 16155165379. The next prime is 16155165427. The reversal of 16155165385 is 58356155161.

It can be written as a sum of positive squares in 4 ways, for example, as 8818900281 + 7336265104 = 93909^2 + 85652^2 .

It is not a de Polignac number, because 16155165385 - 2⁵ = 16155165353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1849789 + ... + 1858501.

It is an arithmetic number, because the mean of its divisors is an integer number (845706771).

Almost surely, 2^16155165385 is an apocalyptic number.

It is an amenable number.

16155165385 is a deficient number, since it is larger than the sum of its proper divisors (4141797119).

16155165385 is an equidigital number, since it uses as much as digits as its factorization.

16155165385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465 (or 9442 counting only the distinct ones).

The product of its digits is 540000, while the sum is 46.

The spelling of 16155165385 in words is "sixteen billion, one hundred fifty-five million, one hundred sixty-five thousand, three hundred eighty-five".