15677209066 has 8 divisors (see below), whose sum is σ = 23519137284. Its totient is φ = 7837496640.

The previous prime is 15677209049. The next prime is 15677209099. The reversal of 15677209066 is 66090277651.

It can be written as a sum of positive squares in 2 ways, for example, as 10661595025 + 5015614041 = 103255^2 + 70821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536145 + ... + 564628.

Almost surely, 2^15677209066 is an apocalyptic number.

15677209066 is a deficient number, since it is larger than the sum of its proper divisors (7841928218).

15677209066 is a wasteful number, since it uses less digits than its factorization.

15677209066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107896.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 15677209066 in words is "fifteen billion, six hundred seventy-seven million, two hundred nine thousand, sixty-six".