38774836064778 has 128 divisors (see below), whose sum is σ = 85778139691008. Its totient is φ = 11683976832000.

The previous prime is 38774836064719. The next prime is 38774836064827. The reversal of 38774836064778 is 87746063847783.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5041581913 + ... + 5041589603.

It is an arithmetic number, because the mean of its divisors is an integer number (670141716336).

Almost surely, 2^{38774836064778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38774836064778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42889069845504).

38774836064778 is an abundant number, since it is smaller than the sum of its proper divisors (47003303626230).

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

38774836064778 is a wasteful number, since it uses less digits than its factorization.

38774836064778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11193 (or 11171 counting only the distinct ones).

The product of its (nonzero) digits is 6372753408, while the sum is 78.

The spelling of 38774836064778 in words is "thirty-eight trillion, seven hundred seventy-four billion, eight hundred thirty-six million, sixty-four thousand, seven hundred seventy-eight".