38640770500 has 96 divisors (see below), whose sum is σ = 93241145088. Its totient is φ = 13914560000.

The previous prime is 38640770461. The next prime is 38640770521. The reversal of 38640770500 is 507704683.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96675 + ... + 294325.

It is an arithmetic number, because the mean of its divisors is an integer number (971261928).

Almost surely, 2^38640770500 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 38640770500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46620572544).

38640770500 is an abundant number, since it is smaller than the sum of its proper divisors (54600374588).

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

38640770500 is a wasteful number, since it uses less digits than its factorization.

38640770500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197710 (or 197698 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 38640770500 in words is "thirty-eight billion, six hundred forty million, seven hundred seventy thousand, five hundred".