16670355554 has 4 divisors (see below), whose sum is σ = 25005533334. Its totient is φ = 8335177776.

The previous prime is 16670355551. The next prime is 16670355577. The reversal of 16670355554 is 45555307661.

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., 16147547329 + 522808225 = 127073^2 + 22865^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16670355499 and 16670355508.

It is not an unprimeable number, because it can be changed into a prime (16670355551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4167588887 + ... + 4167588890.

Almost surely, 2^16670355554 is an apocalyptic number.

16670355554 is a deficient number, since it is larger than the sum of its proper divisors (8335177780).

16670355554 is an equidigital number, since it uses as much as digits as its factorization.

16670355554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8335177779.

The product of its (nonzero) digits is 1890000, while the sum is 47.

The spelling of 16670355554 in words is "sixteen billion, six hundred seventy million, three hundred fifty-five thousand, five hundred fifty-four".