13855857378 has 48 divisors (see below), whose sum is σ = 32251776480. Its totient is φ = 3951756160.

The previous prime is 13855857373. The next prime is 13855857413. The reversal of 13855857378 is 87375855831.

It is not an unprimeable number, because it can be changed into a prime (13855857373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 548988 + ... + 573671.

It is an arithmetic number, because the mean of its divisors is an integer number (671912010).

Almost surely, 2^13855857378 is an apocalyptic number.

13855857378 is an abundant number, since it is smaller than the sum of its proper divisors (18395919102).

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

13855857378 is a wasteful number, since it uses less digits than its factorization.

13855857378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122703 (or 1122692 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 60.

The spelling of 13855857378 in words is "thirteen billion, eight hundred fifty-five million, eight hundred fifty-seven thousand, three hundred seventy-eight".