920641381766 has 8 divisors (see below), whose sum is σ = 1462195135800. Its totient is φ = 433243003168.

The previous prime is 920641381739. The next prime is 920641381771. The reversal of 920641381766 is 667183146029.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13538843816 + ... + 13538843883.

It is an arithmetic number, because the mean of its divisors is an integer number (182774391975).

Almost surely, 2^920641381766 is an apocalyptic number.

920641381766 is a deficient number, since it is larger than the sum of its proper divisors (541553754034).

920641381766 is a wasteful number, since it uses less digits than its factorization.

920641381766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27077687718.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 920641381766 in words is "nine hundred twenty billion, six hundred forty-one million, three hundred eighty-one thousand, seven hundred sixty-six".