38778778914 has 24 divisors (see below), whose sum is σ = 82388136048. Its totient is φ = 12165890880.

The previous prime is 38778778891. The next prime is 38778778933. The reversal of 38778778914 is 41987787783.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11180152 + ... + 11183619.

It is an arithmetic number, because the mean of its divisors is an integer number (3432839002).

Almost surely, 2^38778778914 is an apocalyptic number.

38778778914 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

38778778914 is an abundant number, since it is smaller than the sum of its proper divisors (43609357134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38778778914 is a wasteful number, since it uses less digits than its factorization.

38778778914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22363810 (or 22363793 counting only the distinct ones).

The product of its digits is 132765696, while the sum is 69.

The spelling of 38778778914 in words is "thirty-eight billion, seven hundred seventy-eight million, seven hundred seventy-eight thousand, nine hundred fourteen".