338778776878 has 4 divisors (see below), whose sum is σ = 508168165320. Its totient is φ = 169389388438.

The previous prime is 338778776867. The next prime is 338778776923. The reversal of 338778776878 is 878677877833.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×338778776878² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338778776798 and 338778776807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84694694218 + ... + 84694694221.

It is an arithmetic number, because the mean of its divisors is an integer number (127042041330).

Almost surely, 2^338778776878 is an apocalyptic number.

338778776878 is a deficient number, since it is larger than the sum of its proper divisors (169389388442).

338778776878 is a wasteful number, since it uses less digits than its factorization.

338778776878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169389388441.

The product of its digits is 3717439488, while the sum is 79.

The spelling of 338778776878 in words is "three hundred thirty-eight billion, seven hundred seventy-eight million, seven hundred seventy-six thousand, eight hundred seventy-eight".