678375782083531 has 16 divisors (see below), whose sum is σ = 793394658800640. Its totient is φ = 567934311510720.

The previous prime is 678375782083481. The next prime is 678375782083567. The reversal of 678375782083531 is 135380287573876.

It is not a de Polignac number, because 678375782083531 - 2⁴⁷ = 537638293728203 is a prime.

It is a super-2 number, since 2×678375782083531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678375782086531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2099566026 + ... + 2099889103.

It is an arithmetic number, because the mean of its divisors is an integer number (49587166175040).

Almost surely, 2^{678375782083531} is an apocalyptic number.

678375782083531 is a deficient number, since it is larger than the sum of its proper divisors (115018876717109).

678375782083531 is a wasteful number, since it uses less digits than its factorization.

678375782083531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199455674.

The product of its (nonzero) digits is 1422489600, while the sum is 73.

The spelling of 678375782083531 in words is "six hundred seventy-eight trillion, three hundred seventy-five billion, seven hundred eighty-two million, eighty-three thousand, five hundred thirty-one".