38461617650728 has 8 divisors (see below), whose sum is σ = 72115533095130. Its totient is φ = 19230808825360.

The previous prime is 38461617650681. The next prime is 38461617650761. The reversal of 38461617650728 is 82705671616483.

It can be written as a sum of positive squares in only one way, i.e., 20197635895684 + 18263981755044 = 4494178^2 + 4273638^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 38461617650728.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2403851103163 + ... + 2403851103178.

Almost surely, 2^{38461617650728} is an apocalyptic number.

It is an amenable number.

38461617650728 is a deficient number, since it is larger than the sum of its proper divisors (33653915444402).

38461617650728 is a wasteful number, since it uses less digits than its factorization.

38461617650728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807702206347 (or 4807702206343 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 38461617650728 in words is "thirty-eight trillion, four hundred sixty-one billion, six hundred seventeen million, six hundred fifty thousand, seven hundred twenty-eight".