7878206304993 has 32 divisors (see below), whose sum is σ = 10907749785600. Its totient is φ = 5054931161280.

The previous prime is 7878206304961. The next prime is 7878206305001. The reversal of 7878206304993 is 3994036028787.

It is not a de Polignac number, because 7878206304993 - 2⁵ = 7878206304961 is a prime.

It is a super-2 number, since 2×7878206304993² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7878206304593) 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 31 ways as a sum of consecutive naturals, for example, 493080 + ... + 3999942.

It is an arithmetic number, because the mean of its divisors is an integer number (340867180800).

Almost surely, 2^{7878206304993} is an apocalyptic number.

It is an amenable number.

7878206304993 is a deficient number, since it is larger than the sum of its proper divisors (3029543480607).

7878206304993 is a wasteful number, since it uses less digits than its factorization.

7878206304993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507189.

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 7878206304993 in words is "seven trillion, eight hundred seventy-eight billion, two hundred six million, three hundred four thousand, nine hundred ninety-three".