338317238347878 has 32 divisors (see below), whose sum is σ = 716511768618240. Its totient is φ = 106197279979680.

The previous prime is 338317238347841. The next prime is 338317238347909. The reversal of 338317238347878 is 878743832713833.

It is a happy number.

It is a super-2 number, since 2×338317238347878² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8885295553 + ... + 8885333628.

It is an arithmetic number, because the mean of its divisors is an integer number (22390992769320).

Almost surely, 2^{338317238347878} is an apocalyptic number.

338317238347878 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

338317238347878 is an abundant number, since it is smaller than the sum of its proper divisors (378194530270362).

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

338317238347878 is a wasteful number, since it uses less digits than its factorization.

338317238347878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17770629372.

The product of its digits is 2731180032, while the sum is 75.

The spelling of 338317238347878 in words is "three hundred thirty-eight trillion, three hundred seventeen billion, two hundred thirty-eight million, three hundred forty-seven thousand, eight hundred seventy-eight".