38187423855 has 24 divisors (see below), whose sum is σ = 75647468832. Its totient is φ = 17457107904.

The previous prime is 38187423853. The next prime is 38187423893. The reversal of 38187423855 is 55832478183.

38187423855 is a `hidden beast` number, since 38 + 187 + 423 + 8 + 5 + 5 = 666.

38187423855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38187423855 - 2¹ = 38187423853 is a prime.

It is a super-2 number, since 2×38187423855² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38187423853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60614644 + ... + 60615273.

It is an arithmetic number, because the mean of its divisors is an integer number (3151977868).

Almost surely, 2^38187423855 is an apocalyptic number.

38187423855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38187423855 is a deficient number, since it is larger than the sum of its proper divisors (37460044977).

38187423855 is a wasteful number, since it uses less digits than its factorization.

38187423855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121229935 (or 121229932 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 38187423855 in words is "thirty-eight billion, one hundred eighty-seven million, four hundred twenty-three thousand, eight hundred fifty-five".