38511905500 has 24 divisors (see below), whose sum is σ = 84110002704. Its totient is φ = 15404762000.

The previous prime is 38511905459. The next prime is 38511905501. The reversal of 38511905500 is 550911583.

It is a self number, because there is not a number n which added to its sum of digits gives 38511905500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38511905501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38511406 + ... + 38512405.

It is an arithmetic number, because the mean of its divisors is an integer number (3504583446).

Almost surely, 2^38511905500 is an apocalyptic number.

It is an amenable number.

38511905500 is an abundant number, since it is smaller than the sum of its proper divisors (45598097204).

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

38511905500 is a wasteful number, since it uses less digits than its factorization.

38511905500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77023830 (or 77023818 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 38511905500 in words is "thirty-eight billion, five hundred eleven million, nine hundred five thousand, five hundred".