878308480440 has 64 divisors (see below), whose sum is σ = 2927694938400. Its totient is φ = 234215594496.

The previous prime is 878308480429. The next prime is 878308480447. The reversal of 878308480440 is 44084803878.

It is a happy number.

878308480440 is a `hidden beast` number, since 87 + 83 + 0 + 8 + 48 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878308480447) 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, 406623217 + ... + 406625376.

Almost surely, 2^878308480440 is an apocalyptic number.

It is an amenable number.

878308480440 is an abundant number, since it is smaller than the sum of its proper divisors (2049386457960).

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

878308480440 is a wasteful number, since it uses less digits than its factorization.

878308480440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813248613 (or 813248603 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 54.

The spelling of 878308480440 in words is "eight hundred seventy-eight billion, three hundred eight million, four hundred eighty thousand, four hundred forty".