38400187611 has 4 divisors (see below), whose sum is σ = 51200250152. Its totient is φ = 25600125072.

The previous prime is 38400187603. The next prime is 38400187613. The reversal of 38400187611 is 11678100483.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38400187611 - 2³ = 38400187603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38400187611.

It is not an unprimeable number, because it can be changed into a prime (38400187613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400031266 + ... + 6400031271.

It is an arithmetic number, because the mean of its divisors is an integer number (12800062538).

Almost surely, 2^38400187611 is an apocalyptic number.

38400187611 is a deficient number, since it is larger than the sum of its proper divisors (12800062541).

38400187611 is a wasteful number, since it uses less digits than its factorization.

38400187611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800062540.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 38400187611 in words is "thirty-eight billion, four hundred million, one hundred eighty-seven thousand, six hundred eleven".