16161101599 has 4 divisors (see below), whose sum is σ = 16201404000. Its totient is φ = 16120799200.

The previous prime is 16161101587. The next prime is 16161101611. The reversal of 16161101599 is 99510116161.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16161101587) and next prime (16161101611).

It is a cyclic number.

It is not a de Polignac number, because 16161101599 - 2¹¹ = 16161099551 is a prime.

It is a super-2 number, since 2×16161101599² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161101549) 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, 20150599 + ... + 20151400.

It is an arithmetic number, because the mean of its divisors is an integer number (4050351000).

Almost surely, 2^16161101599 is an apocalyptic number.

16161101599 is a deficient number, since it is larger than the sum of its proper divisors (40302401).

16161101599 is an equidigital number, since it uses as much as digits as its factorization.

16161101599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40302400.

The product of its (nonzero) digits is 14580, while the sum is 40.

The spelling of 16161101599 in words is "sixteen billion, one hundred sixty-one million, one hundred one thousand, five hundred ninety-nine".