16017315861 has 4 divisors (see below), whose sum is σ = 21356421152. Its totient is φ = 10678210572.

The previous prime is 16017315859. The next prime is 16017315869. The reversal of 16017315861 is 16851371061.

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 not a de Polignac number, because 16017315861 - 2¹ = 16017315859 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 (16017315869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2669552641 + ... + 2669552646.

It is an arithmetic number, because the mean of its divisors is an integer number (5339105288).

Almost surely, 2^16017315861 is an apocalyptic number.

It is an amenable number.

16017315861 is a deficient number, since it is larger than the sum of its proper divisors (5339105291).

16017315861 is an equidigital number, since it uses as much as digits as its factorization.

16017315861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339105290.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 16017315861 in words is "sixteen billion, seventeen million, three hundred fifteen thousand, eight hundred sixty-one".