678735544471 has 8 divisors (see below), whose sum is σ = 718668528624. Its totient is φ = 638803378560.

The previous prime is 678735544433. The next prime is 678735544483. The reversal of 678735544471 is 174445537876.

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

It is a cyclic number.

It is not a de Polignac number, because 678735544471 - 2¹³ = 678735536279 is a prime.

It is a super-3 number, since 3×678735544471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678735544171) 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, 2609116 + ... + 2857438.

It is an arithmetic number, because the mean of its divisors is an integer number (89833566078).

Almost surely, 2^678735544471 is an apocalyptic number.

678735544471 is a deficient number, since it is larger than the sum of its proper divisors (39932984153).

678735544471 is a wasteful number, since it uses less digits than its factorization.

678735544471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409121.

The product of its digits is 79027200, while the sum is 61.

The spelling of 678735544471 in words is "six hundred seventy-eight billion, seven hundred thirty-five million, five hundred forty-four thousand, four hundred seventy-one".