38387504782106 has 4 divisors (see below), whose sum is σ = 57581257173162. Its totient is φ = 19193752391052.

The previous prime is 38387504782009. The next prime is 38387504782111. The reversal of 38387504782106 is 60128740578383.

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

It can be written as a sum of positive squares in only one way, i.e., 22694886127225 + 15692618654881 = 4763915^2 + 3961391^2 .

It is a super-2 number, since 2×38387504782106² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9596876195525 + ... + 9596876195528.

Almost surely, 2^{38387504782106} is an apocalyptic number.

38387504782106 is a deficient number, since it is larger than the sum of its proper divisors (19193752391056).

38387504782106 is a wasteful number, since it uses less digits than its factorization.

38387504782106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19193752391055.

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 38387504782106 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred four million, seven hundred eighty-two thousand, one hundred six".