16318652773 has 4 divisors (see below), whose sum is σ = 16333529580. Its totient is φ = 16303775968.

The previous prime is 16318652731. The next prime is 16318652807. The reversal of 16318652773 is 37725681361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3223741284 + 13094911489 = 56778^2 + 114433^2 .

It is a cyclic number.

It is not a de Polignac number, because 16318652773 - 2¹³ = 16318644581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16318652723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7436758 + ... + 7438951.

It is an arithmetic number, because the mean of its divisors is an integer number (4083382395).

Almost surely, 2^16318652773 is an apocalyptic number.

It is an amenable number.

16318652773 is a deficient number, since it is larger than the sum of its proper divisors (14876807).

16318652773 is a wasteful number, since it uses less digits than its factorization.

16318652773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14876806.

The product of its digits is 1270080, while the sum is 49.

The spelling of 16318652773 in words is "sixteen billion, three hundred eighteen million, six hundred fifty-two thousand, seven hundred seventy-three".