16115061517 has 4 divisors (see below), whose sum is σ = 16118234496. Its totient is φ = 16111888540.

The previous prime is 16115061497. The next prime is 16115061541. The reversal of 16115061517 is 71516051161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16115061517 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 (16115061577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578859 + ... + 1589032.

It is an arithmetic number, because the mean of its divisors is an integer number (4029558624).

Almost surely, 2^16115061517 is an apocalyptic number.

It is an amenable number.

16115061517 is a deficient number, since it is larger than the sum of its proper divisors (3172979).

16115061517 is an equidigital number, since it uses as much as digits as its factorization.

16115061517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172978.

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 16115061517 in words is "sixteen billion, one hundred fifteen million, sixty-one thousand, five hundred seventeen".