6878355493769 has 4 divisors (see below), whose sum is σ = 6878386723344. Its totient is φ = 6878324264196.

The previous prime is 6878355493739. The next prime is 6878355493783. The reversal of 6878355493769 is 9673945538786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6878355493769 - 2³⁶ = 6809636017033 is a prime.

It is a super-2 number, since 2×6878355493769² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6878355493693 and 6878355493702.

It is not an unprimeable number, because it can be changed into a prime (6878355493739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15282047 + ... + 15725700.

It is an arithmetic number, because the mean of its divisors is an integer number (1719596680836).

Almost surely, 2^{6878355493769} is an apocalyptic number.

It is an amenable number.

6878355493769 is a deficient number, since it is larger than the sum of its proper divisors (31229575).

6878355493769 is a wasteful number, since it uses less digits than its factorization.

6878355493769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31229574.

The product of its digits is 8230118400, while the sum is 80.

The spelling of 6878355493769 in words is "six trillion, eight hundred seventy-eight billion, three hundred fifty-five million, four hundred ninety-three thousand, seven hundred sixty-nine".