345676767878 has 24 divisors (see below), whose sum is σ = 565890156288. Its totient is φ = 158286858912.

The previous prime is 345676767869. The next prime is 345676767883. The reversal of 345676767878 is 878767676543.

345676767878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3983501 + ... + 4069352.

It is an arithmetic number, because the mean of its divisors is an integer number (23578756512).

Almost surely, 2^345676767878 is an apocalyptic number.

345676767878 is a deficient number, since it is larger than the sum of its proper divisors (220213388410).

345676767878 is a wasteful number, since it uses less digits than its factorization.

345676767878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053008 (or 8052995 counting only the distinct ones).

The product of its digits is 1991485440, while the sum is 74.

The spelling of 345676767878 in words is "three hundred forty-five billion, six hundred seventy-six million, seven hundred sixty-seven thousand, eight hundred seventy-eight".