38811811783278 has 48 divisors (see below), whose sum is σ = 81949967539920. Its totient is φ = 12252491868672.

The previous prime is 38811811783177. The next prime is 38811811783279. The reversal of 38811811783278 is 87238711811883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38811811783279) 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, 4036876 + ... + 9691232.

It is an arithmetic number, because the mean of its divisors is an integer number (1707290990415).

Almost surely, 2^{38811811783278} is an apocalyptic number.

38811811783278 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38811811783278 is an abundant number, since it is smaller than the sum of its proper divisors (43138155756642).

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

38811811783278 is a wasteful number, since it uses less digits than its factorization.

38811811783278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657569 (or 5657550 counting only the distinct ones).

The product of its digits is 28901376, while the sum is 66.

The spelling of 38811811783278 in words is "thirty-eight trillion, eight hundred eleven billion, eight hundred eleven million, seven hundred eighty-three thousand, two hundred seventy-eight".