16661073313375 has 32 divisors (see below), whose sum is σ = 20825084756736. Its totient is φ = 13308311923200.

The previous prime is 16661073313321. The next prime is 16661073313421. The reversal of 16661073313375 is 57331337016661.

It is not a de Polignac number, because 16661073313375 - 2³¹ = 16658925829727 is a prime.

It is a super-4 number, since 4×16661073313375⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495155802 + ... + 495189448.

It is an arithmetic number, because the mean of its divisors is an integer number (650783898648).

Almost surely, 2^{16661073313375} is an apocalyptic number.

16661073313375 is a deficient number, since it is larger than the sum of its proper divisors (4164011443361).

16661073313375 is an equidigital number, since it uses as much as digits as its factorization.

16661073313375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39652 (or 39642 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 52.

The spelling of 16661073313375 in words is "sixteen trillion, six hundred sixty-one billion, seventy-three million, three hundred thirteen thousand, three hundred seventy-five".