38817800661 has 8 divisors (see below), whose sum is σ = 51771632544. Its totient is φ = 25871251280.

The previous prime is 38817800617. The next prime is 38817800719. The reversal of 38817800661 is 16600871883.

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

It is a cyclic number.

It is not a de Polignac number, because 38817800661 - 2⁷ = 38817800533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38817800661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38817807661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808175 + ... + 1829516.

It is an arithmetic number, because the mean of its divisors is an integer number (6471454068).

Almost surely, 2^38817800661 is an apocalyptic number.

It is an amenable number.

38817800661 is a deficient number, since it is larger than the sum of its proper divisors (12953831883).

38817800661 is a wasteful number, since it uses less digits than its factorization.

38817800661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641251.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 38817800661 in words is "thirty-eight billion, eight hundred seventeen million, eight hundred thousand, six hundred sixty-one".