38878505347789 has 8 divisors (see below), whose sum is σ = 40252300254360. Its totient is φ = 37506920894016.

The previous prime is 38878505347777. The next prime is 38878505347841. The reversal of 38878505347789 is 98774350587883.

It can be written as a sum of positive squares in 4 ways, for example, as 5667684876100 + 33210820471689 = 2380690^2 + 5762883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38878505347789 - 2⁵ = 38878505347757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38878505347729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552577402 + ... + 552647755.

It is an arithmetic number, because the mean of its divisors is an integer number (5031537531795).

Almost surely, 2^{38878505347789} is an apocalyptic number.

It is an amenable number.

38878505347789 is a deficient number, since it is larger than the sum of its proper divisors (1373794906571).

38878505347789 is a wasteful number, since it uses less digits than its factorization.

38878505347789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105226399.

The product of its (nonzero) digits is 11379916800, while the sum is 82.

The spelling of 38878505347789 in words is "thirty-eight trillion, eight hundred seventy-eight billion, five hundred five million, three hundred forty-seven thousand, seven hundred eighty-nine".