8378580347778 has 16 divisors (see below), whose sum is σ = 17113696030080. Its totient is φ = 2733437560176.

The previous prime is 8378580347743. The next prime is 8378580347807. The reversal of 8378580347778 is 8777430858738.

It is a super-2 number, since 2×8378580347778² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14855638633 + ... + 14855639196.

It is an arithmetic number, because the mean of its divisors is an integer number (1069606001880).

Almost surely, 2^{8378580347778} is an apocalyptic number.

8378580347778 is an abundant number, since it is smaller than the sum of its proper divisors (8735115682302).

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

8378580347778 is a wasteful number, since it uses less digits than its factorization.

8378580347778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29711277881.

The product of its (nonzero) digits is 1770209280, while the sum is 75.

The spelling of 8378580347778 in words is "eight trillion, three hundred seventy-eight billion, five hundred eighty million, three hundred forty-seven thousand, seven hundred seventy-eight".