38018117678 has 16 divisors (see below), whose sum is σ = 61651003920. Its totient is φ = 17521862976.

The previous prime is 38018117623. The next prime is 38018117689. The reversal of 38018117678 is 87671181083.

It is a happy number.

It is a super-2 number, since 2×38018117678² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13518551 + ... + 13521362.

It is an arithmetic number, because the mean of its divisors is an integer number (3853187745).

Almost surely, 2^38018117678 is an apocalyptic number.

38018117678 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38018117678 is a deficient number, since it is larger than the sum of its proper divisors (23632886242).

38018117678 is a wasteful number, since it uses less digits than its factorization.

38018117678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27039971.

The product of its (nonzero) digits is 451584, while the sum is 50.

The spelling of 38018117678 in words is "thirty-eight billion, eighteen million, one hundred seventeen thousand, six hundred seventy-eight".