5640678678751 has 8 divisors (see below), whose sum is σ = 5641740729504. Its totient is φ = 5639616744960.

The previous prime is 5640678678749. The next prime is 5640678678757. The reversal of 5640678678751 is 1578768760465.

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 5640678678751 - 2¹ = 5640678678749 is a prime.

It is a super-2 number, since 2×5640678678751² (a number of 26 digits) contains 22 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 (5640678678757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219699651 + ... + 219725323.

It is an arithmetic number, because the mean of its divisors is an integer number (705217591188).

Almost surely, 2^{5640678678751} is an apocalyptic number.

5640678678751 is a deficient number, since it is larger than the sum of its proper divisors (1062050753).

5640678678751 is a wasteful number, since it uses less digits than its factorization.

5640678678751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58481.

The product of its (nonzero) digits is 474163200, while the sum is 70.

The spelling of 5640678678751 in words is "five trillion, six hundred forty billion, six hundred seventy-eight million, six hundred seventy-eight thousand, seven hundred fifty-one".