885864452307840 has 640 divisors, whose sum is σ = 3242673110920320. Its totient is φ = 230343369338880.

The previous prime is 885864452307827. The next prime is 885864452307917. The reversal of 885864452307840 is 48703254468588.

885864452307840 is a `hidden beast` number, since 8 + 8 + 5 + 8 + 64 + 452 + 3 + 0 + 78 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1308154935 + ... + 1308831945.

It is an arithmetic number, because the mean of its divisors is an integer number (5066676735813).

Almost surely, 2^{885864452307840} is an apocalyptic number.

885864452307840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 885864452307840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621336555460160).

885864452307840 is an abundant number, since it is smaller than the sum of its proper divisors (2356808658612480).

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

885864452307840 is a wasteful number, since it uses less digits than its factorization.

885864452307840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677672 (or 677651 counting only the distinct ones).

The product of its (nonzero) digits is 1651507200, while the sum is 72.

The spelling of 885864452307840 in words is "eight hundred eighty-five trillion, eight hundred sixty-four billion, four hundred fifty-two million, three hundred seven thousand, eight hundred forty".