38388368855 has 4 divisors (see below), whose sum is σ = 46066042632. Its totient is φ = 30710695080.

The previous prime is 38388368833. The next prime is 38388368857. The reversal of 38388368855 is 55886388383.

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

It is not a de Polignac number, because 38388368855 - 2²⁸ = 38119933399 is a prime.

It is a super-2 number, since 2×38388368855² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38388368791 and 38388368800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38388368857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838836881 + ... + 3838836890.

It is an arithmetic number, because the mean of its divisors is an integer number (11516510658).

Almost surely, 2^38388368855 is an apocalyptic number.

38388368855 is a deficient number, since it is larger than the sum of its proper divisors (7677673777).

38388368855 is an equidigital number, since it uses as much as digits as its factorization.

38388368855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677673776.

The product of its digits is 132710400, while the sum is 65.

The spelling of 38388368855 in words is "thirty-eight billion, three hundred eighty-eight million, three hundred sixty-eight thousand, eight hundred fifty-five".