766961108657 has 8 divisors (see below), whose sum is σ = 800441061696. Its totient is φ = 733492307152.

The previous prime is 766961108653. The next prime is 766961108687. The reversal of 766961108657 is 756801169667.

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 766961108657 - 2² = 766961108653 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 766961108657.

It is not an unprimeable number, because it can be changed into a prime (766961108651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2647178 + ... + 2922579.

It is an arithmetic number, because the mean of its divisors is an integer number (100055132712).

Almost surely, 2^766961108657 is an apocalyptic number.

It is an amenable number.

766961108657 is a deficient number, since it is larger than the sum of its proper divisors (33479953039).

766961108657 is a wasteful number, since it uses less digits than its factorization.

766961108657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575767.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 766961108657 in words is "seven hundred sixty-six billion, nine hundred sixty-one million, one hundred eight thousand, six hundred fifty-seven".