38678651660638 has 8 divisors (see below), whose sum is σ = 63292339081080. Its totient is φ = 17581205300280.

The previous prime is 38678651660633. The next prime is 38678651660653. The reversal of 38678651660638 is 83606615687683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678651660633) 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, 879060264993 + ... + 879060265036.

It is an arithmetic number, because the mean of its divisors is an integer number (7911542385135).

Almost surely, 2^{38678651660638} is an apocalyptic number.

38678651660638 is a deficient number, since it is larger than the sum of its proper divisors (24613687420442).

38678651660638 is a wasteful number, since it uses less digits than its factorization.

38678651660638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758120530042.

The product of its (nonzero) digits is 1254113280, while the sum is 73.

The spelling of 38678651660638 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred fifty-one million, six hundred sixty thousand, six hundred thirty-eight".