38136566409018 has 128 divisors (see below), whose sum is σ = 95686367938560. Its totient is φ = 9843885054720.

The previous prime is 38136566409013. The next prime is 38136566409037. The reversal of 38136566409018 is 81090466563183.

It is not an unprimeable number, because it can be changed into a prime (38136566409013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1135371768 + ... + 1135405356.

It is an arithmetic number, because the mean of its divisors is an integer number (747549749520).

Almost surely, 2^{38136566409018} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38136566409018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47843183969280).

38136566409018 is an abundant number, since it is smaller than the sum of its proper divisors (57549801529542).

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

38136566409018 is a wasteful number, since it uses less digits than its factorization.

38136566409018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48852.

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 38136566409018 in words is "thirty-eight trillion, one hundred thirty-six billion, five hundred sixty-six million, four hundred nine thousand, eighteen".