16352339884778 has 4 divisors (see below), whose sum is σ = 24528509827170. Its totient is φ = 8176169942388.

The previous prime is 16352339884759. The next prime is 16352339884819. The reversal of 16352339884778 is 87748893325361.

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

It can be written as a sum of positive squares in only one way, i.e., 11737976201329 + 4614363683449 = 3426073^2 + 2148107^2 .

It is a super-2 number, since 2×16352339884778² (a number of 27 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, 4088084971193 + ... + 4088084971196.

Almost surely, 2^{16352339884778} is an apocalyptic number.

16352339884778 is a deficient number, since it is larger than the sum of its proper divisors (8176169942392).

16352339884778 is an equidigital number, since it uses as much as digits as its factorization.

16352339884778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8176169942391.

The product of its digits is 1463132160, while the sum is 74.

The spelling of 16352339884778 in words is "sixteen trillion, three hundred fifty-two billion, three hundred thirty-nine million, eight hundred eighty-four thousand, seven hundred seventy-eight".