38550646663 has 4 divisors (see below), whose sum is σ = 38585918248. Its totient is φ = 38515375080.

The previous prime is 38550646621. The next prime is 38550646691. The reversal of 38550646663 is 36664605583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38550646663 - 2²¹ = 38548549511 is a prime.

It is a super-3 number, since 3×38550646663³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38550646663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38550646363) 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, 17634153 + ... + 17636338.

It is an arithmetic number, because the mean of its divisors is an integer number (9646479562).

Almost surely, 2^38550646663 is an apocalyptic number.

38550646663 is a deficient number, since it is larger than the sum of its proper divisors (35271585).

38550646663 is a wasteful number, since it uses less digits than its factorization.

38550646663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35271584.

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 38550646663 in words is "thirty-eight billion, five hundred fifty million, six hundred forty-six thousand, six hundred sixty-three".