38640671312 has 40 divisors (see below), whose sum is σ = 75172022016. Its totient is φ = 19241554176.

The previous prime is 38640671291. The next prime is 38640671351. The reversal of 38640671312 is 21317604683.

It is a super-3 number, since 3×38640671312³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38640671312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7143713 + ... + 7149119.

Almost surely, 2^38640671312 is an apocalyptic number.

It is an amenable number.

38640671312 is a deficient number, since it is larger than the sum of its proper divisors (36531350704).

38640671312 is a wasteful number, since it uses less digits than its factorization.

38640671312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155 (or 7149 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 38640671312 in words is "thirty-eight billion, six hundred forty million, six hundred seventy-one thousand, three hundred twelve".