16961865427 has 8 divisors (see below), whose sum is σ = 18389221200. Its totient is φ = 15552023520.

The previous prime is 16961865343. The next prime is 16961865443. The reversal of 16961865427 is 72456816961.

16961865427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16961865427 - 2⁷ = 16961865299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16961865467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4376449 + ... + 4380322.

It is an arithmetic number, because the mean of its divisors is an integer number (2298652650).

Almost surely, 2^16961865427 is an apocalyptic number.

16961865427 is a deficient number, since it is larger than the sum of its proper divisors (1427355773).

16961865427 is a wasteful number, since it uses less digits than its factorization.

16961865427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756933.

The product of its digits is 4354560, while the sum is 55.

The spelling of 16961865427 in words is "sixteen billion, nine hundred sixty-one million, eight hundred sixty-five thousand, four hundred twenty-seven".