16091685146 has 4 divisors (see below), whose sum is σ = 24137527722. Its totient is φ = 8045842572.

The previous prime is 16091685119. The next prime is 16091685173. The reversal of 16091685146 is 64158619061.

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 (16091685119) and next prime (16091685173).

It can be written as a sum of positive squares in only one way, i.e., 16088131921 + 3553225 = 126839^2 + 1885^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16091685146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4022921285 + ... + 4022921288.

Almost surely, 2^16091685146 is an apocalyptic number.

16091685146 is a deficient number, since it is larger than the sum of its proper divisors (8045842576).

16091685146 is an equidigital number, since it uses as much as digits as its factorization.

16091685146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8045842575.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 16091685146 in words is "sixteen billion, ninety-one million, six hundred eighty-five thousand, one hundred forty-six".