678000520881 has 20 divisors (see below), whose sum is σ = 1027080609984. Its totient is φ = 445634141400.

The previous prime is 678000520861. The next prime is 678000520913. The reversal of 678000520881 is 188025000876.

It is not a de Polignac number, because 678000520881 - 2²² = 677996326577 is a prime.

It is a super-2 number, since 2×678000520881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678000520831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 58940565 + ... + 58952066.

Almost surely, 2^678000520881 is an apocalyptic number.

It is an amenable number.

678000520881 is a deficient number, since it is larger than the sum of its proper divisors (349080089103).

678000520881 is a wasteful number, since it uses less digits than its factorization.

678000520881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117892714 (or 117892705 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 678000520881 in words is "six hundred seventy-eight billion, five hundred twenty thousand, eight hundred eighty-one".