961045668671 has 16 divisors (see below), whose sum is σ = 1052927436960. Its totient is φ = 869921541120.

The previous prime is 961045668643. The next prime is 961045668679. The reversal of 961045668671 is 176866540169.

It is a cyclic number.

It is not a de Polignac number, because 961045668671 - 2¹⁸ = 961045406527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 961045668671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961045668679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3506711 + ... + 3770823.

It is an arithmetic number, because the mean of its divisors is an integer number (65807964810).

Almost surely, 2^961045668671 is an apocalyptic number.

961045668671 is a deficient number, since it is larger than the sum of its proper divisors (91881768289).

961045668671 is a wasteful number, since it uses less digits than its factorization.

961045668671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265546.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 961045668671 in words is "nine hundred sixty-one billion, forty-five million, six hundred sixty-eight thousand, six hundred seventy-one".