16605161005 has 16 divisors (see below), whose sum is σ = 21047330304. Its totient is φ = 12556635840.

The previous prime is 16605160993. The next prime is 16605161021. The reversal of 16605161005 is 50016150661.

It is a de Polignac number, because none of the positive numbers 2^k-16605161005 is a prime.

It is a super-2 number, since 2×16605161005² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239034 + ... + 1252363.

It is an arithmetic number, because the mean of its divisors is an integer number (1315458144).

Almost surely, 2^16605161005 is an apocalyptic number.

It is an amenable number.

16605161005 is a deficient number, since it is larger than the sum of its proper divisors (4442169299).

16605161005 is a wasteful number, since it uses less digits than its factorization.

16605161005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491476.

The product of its (nonzero) digits is 5400, while the sum is 31.

It can be divided in two parts, 1660516 and 1005, that added together give a square (1661521 = 1289²).

The spelling of 16605161005 in words is "sixteen billion, six hundred five million, one hundred sixty-one thousand, five".