38387775641628 has 48 divisors (see below), whose sum is σ = 102370440677120. Its totient is φ = 10967610294144.

The previous prime is 38387775641521. The next prime is 38387775641629. The reversal of 38387775641628 is 82614657778383.

38387775641628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 38387775641628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38387775641629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3929926 + ... + 9603117.

Almost surely, 2^{38387775641628} is an apocalyptic number.

It is an amenable number.

38387775641628 is an abundant number, since it is smaller than the sum of its proper divisors (63982665035492).

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

38387775641628 is a wasteful number, since it uses less digits than its factorization.

38387775641628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13566826 (or 13566824 counting only the distinct ones).

The product of its digits is 2275983360, while the sum is 75.

The spelling of 38387775641628 in words is "thirty-eight trillion, three hundred eighty-seven billion, seven hundred seventy-five million, six hundred forty-one thousand, six hundred twenty-eight".