38515218000 has 320 divisors, whose sum is σ = 144040685568. Its totient is φ = 8671449600.

The previous prime is 38515217999. The next prime is 38515218011. The reversal of 38515218000 is 81251583.

It is a happy number.

It is a congruent number.

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, 2807157 + ... + 2820843.

Almost surely, 2^38515218000 is an apocalyptic number.

38515218000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38515218000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72020342784).

38515218000 is an abundant number, since it is smaller than the sum of its proper divisors (105525467568).

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

38515218000 is a wasteful number, since it uses less digits than its factorization.

38515218000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13787 (or 13771 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

Adding to 38515218000 its reverse (81251583), we get a palindrome (38596469583).

The spelling of 38515218000 in words is "thirty-eight billion, five hundred fifteen million, two hundred eighteen thousand".