845490878766 has 24 divisors (see below), whose sum is σ = 1831913946720. Its totient is φ = 281827670976.

The previous prime is 845490878761. The next prime is 845490878801. The reversal of 845490878766 is 667878094548.

845490878766 is a `hidden beast` number, since 8 + 4 + 5 + 490 + 8 + 78 + 7 + 66 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 845490878694 and 845490878703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845490878761) 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 11 ways as a sum of consecutive naturals, for example, 3310731 + ... + 3556953.

It is an arithmetic number, because the mean of its divisors is an integer number (76329747780).

Almost surely, 2^845490878766 is an apocalyptic number.

845490878766 is an abundant number, since it is smaller than the sum of its proper divisors (986423067954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845490878766 is a wasteful number, since it uses less digits than its factorization.

845490878766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437000 (or 436997 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 72.

The spelling of 845490878766 in words is "eight hundred forty-five billion, four hundred ninety million, eight hundred seventy-eight thousand, seven hundred sixty-six".