8378407452680 has 16 divisors (see below), whose sum is σ = 18851416768620. Its totient is φ = 3351362981056.

The previous prime is 8378407452661. The next prime is 8378407452847. The reversal of 8378407452680 is 862547048738.

It can be written as a sum of positive squares in 2 ways, for example, as 7141903484356 + 1236503968324 = 2672434^2 + 1111982^2 .

It is a super-2 number, since 2×8378407452680² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104730093119 + ... + 104730093198.

Almost surely, 2^{8378407452680} is an apocalyptic number.

It is an amenable number.

8378407452680 is an abundant number, since it is smaller than the sum of its proper divisors (10473009315940).

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

8378407452680 is a wasteful number, since it uses less digits than its factorization.

8378407452680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209460186328 (or 209460186324 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 62.

The spelling of 8378407452680 in words is "eight trillion, three hundred seventy-eight billion, four hundred seven million, four hundred fifty-two thousand, six hundred eighty".