678080454756584 has 128 divisors (see below), whose sum is σ = 1438619114741760. Its totient is φ = 296839620000000.

The previous prime is 678080454756581. The next prime is 678080454756643. The reversal of 678080454756584 is 485657454080876.

It is not an unprimeable number, because it can be changed into a prime (678080454756581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9194149709 + ... + 9194223459.

It is an arithmetic number, because the mean of its divisors is an integer number (11239211833920).

Almost surely, 2^{678080454756584} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678080454756584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719309557370880).

678080454756584 is an abundant number, since it is smaller than the sum of its proper divisors (760538659985176).

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

678080454756584 is a wasteful number, since it uses less digits than its factorization.

678080454756584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89983 (or 89979 counting only the distinct ones).

The product of its (nonzero) digits is 7225344000, while the sum is 77.

The spelling of 678080454756584 in words is "six hundred seventy-eight trillion, eighty billion, four hundred fifty-four million, seven hundred fifty-six thousand, five hundred eighty-four".