7678642881057 has 16 divisors (see below), whose sum is σ = 10778452200000. Its totient is φ = 4849034886144.

The previous prime is 7678642881047. The next prime is 7678642881089. The reversal of 7678642881057 is 7501882468767.

It is not a de Polignac number, because 7678642881057 - 2⁸ = 7678642880801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7678642880982 and 7678642881000.

It is not an unprimeable number, because it can be changed into a prime (7678642881037) 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 15 ways as a sum of consecutive naturals, for example, 8369932 + ... + 9241917.

It is an arithmetic number, because the mean of its divisors is an integer number (673653262500).

Almost surely, 2^{7678642881057} is an apocalyptic number.

It is an amenable number.

7678642881057 is a deficient number, since it is larger than the sum of its proper divisors (3099809318943).

7678642881057 is a wasteful number, since it uses less digits than its factorization.

7678642881057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17619520.

The product of its (nonzero) digits is 252887040, while the sum is 69.

The spelling of 7678642881057 in words is "seven trillion, six hundred seventy-eight billion, six hundred forty-two million, eight hundred eighty-one thousand, fifty-seven".