38778458380 has 48 divisors (see below), whose sum is σ = 84444444000. Its totient is φ = 14940670976.

The previous prime is 38778458363. The next prime is 38778458399. The reversal of 38778458380 is 8385487783.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163236 + ... + 322804.

It is an arithmetic number, because the mean of its divisors is an integer number (1759259250).

Almost surely, 2^38778458380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38778458380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42222222000).

38778458380 is an abundant number, since it is smaller than the sum of its proper divisors (45665985620).

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

38778458380 is a wasteful number, since it uses less digits than its factorization.

38778458380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160026 (or 160024 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 38778458380 in words is "thirty-eight billion, seven hundred seventy-eight million, four hundred fifty-eight thousand, three hundred eighty".