161266647375 has 96 divisors (see below), whose sum is σ = 318425852160. Its totient is φ = 78157900800.

The previous prime is 161266647359. The next prime is 161266647419. The reversal of 161266647375 is 573746662161.

161266647375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161266647375 - 2⁴ = 161266647359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 409242 + ... + 700008.

It is an arithmetic number, because the mean of its divisors is an integer number (3316935960).

Almost surely, 2^161266647375 is an apocalyptic number.

161266647375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161266647375 is a deficient number, since it is larger than the sum of its proper divisors (157159204785).

161266647375 is a wasteful number, since it uses less digits than its factorization.

161266647375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290834 (or 290821 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The spelling of 161266647375 in words is "one hundred sixty-one billion, two hundred sixty-six million, six hundred forty-seven thousand, three hundred seventy-five".