16736206618 has 4 divisors (see below), whose sum is σ = 25104309930. Its totient is φ = 8368103308.

The previous prime is 16736206609. The next prime is 16736206673. The reversal of 16736206618 is 81660263761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81660263761 = 19 ⋅4297908619.

It can be written as a sum of positive squares in only one way, i.e., 8754034969 + 7982171649 = 93563^2 + 89343^2 .

It is a super-2 number, since 2×16736206618² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4184051653 + ... + 4184051656.

Almost surely, 2^16736206618 is an apocalyptic number.

16736206618 is a deficient number, since it is larger than the sum of its proper divisors (8368103312).

16736206618 is an equidigital number, since it uses as much as digits as its factorization.

16736206618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8368103311.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 16736206618 in words is "sixteen billion, seven hundred thirty-six million, two hundred six thousand, six hundred eighteen".