16109617690 has 16 divisors (see below), whose sum is σ = 30703036392. Its totient is φ = 6064797184.

The previous prime is 16109617663. The next prime is 16109617709. The reversal of 16109617690 is 9671690161.

It can be written as a sum of positive squares in 4 ways, for example, as 15028062921 + 1081554769 = 122589^2 + 32887^2 .

It is a super-2 number, since 2×16109617690² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16109617690.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 47381059 + ... + 47381398.

Almost surely, 2^16109617690 is an apocalyptic number.

16109617690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16109617690 is a deficient number, since it is larger than the sum of its proper divisors (14593418702).

16109617690 is a wasteful number, since it uses less digits than its factorization.

16109617690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94762481.

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 16109617690 in words is "sixteen billion, one hundred nine million, six hundred seventeen thousand, six hundred ninety".