38122172000 has 192 divisors, whose sum is σ = 103628947968. Its totient is φ = 13666240000.

The previous prime is 38122171987. The next prime is 38122172003. The reversal of 38122172000 is 27122183.

It is a Cunningham number, because it is equal to 195249²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38122172003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3117899 + ... + 3130101.

It is an arithmetic number, because the mean of its divisors is an integer number (539734104).

Almost surely, 2^38122172000 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 38122172000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51814473984).

38122172000 is an abundant number, since it is smaller than the sum of its proper divisors (65506775968).

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

38122172000 is a wasteful number, since it uses less digits than its factorization.

38122172000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12292 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 38122172000 its reverse (27122183), we get a palindrome (38149294183).

The spelling of 38122172000 in words is "thirty-eight billion, one hundred twenty-two million, one hundred seventy-two thousand".