678081134591 has 8 divisors (see below), whose sum is σ = 779231360544. Its totient is φ = 578001281760.

The previous prime is 678081134569. The next prime is 678081134609. The reversal of 678081134591 is 195431180876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678081134591 - 2¹⁴ = 678081118207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678081134501) 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, 267591920 + ... + 267594453.

It is an arithmetic number, because the mean of its divisors is an integer number (97403920068).

Almost surely, 2^678081134591 is an apocalyptic number.

678081134591 is a deficient number, since it is larger than the sum of its proper divisors (101150225953).

678081134591 is a wasteful number, since it uses less digits than its factorization.

678081134591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535186561.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 678081134591 in words is "six hundred seventy-eight billion, eighty-one million, one hundred thirty-four thousand, five hundred ninety-one".