8404378508032 has 72 divisors (see below), whose sum is σ = 18068601972960. Its totient is φ = 3878467584000.

The previous prime is 8404378508027. The next prime is 8404378508039. The reversal of 8404378508032 is 2308058734048.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (8404378508039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27701157 + ... + 28002907.

It is an arithmetic number, because the mean of its divisors is an integer number (250952805180).

Almost surely, 2^{8404378508032} is an apocalyptic number.

It is an amenable number.

8404378508032 is an abundant number, since it is smaller than the sum of its proper divisors (9664223464928).

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

8404378508032 is a wasteful number, since it uses less digits than its factorization.

8404378508032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310149 (or 310135 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 8404378508032 in words is "eight trillion, four hundred four billion, three hundred seventy-eight million, five hundred eight thousand, thirty-two".