38561569641 has 63 divisors (see below), whose sum is σ = 67320030861. Its totient is φ = 22013974584.

The previous prime is 38561569621. The next prime is 38561569679. The reversal of 38561569641 is 14696516583.

The square root of 38561569641 is 196371.

It is a perfect power (a square), and thus also a powerful number.

38561569641 is a `hidden beast` number, since 38 + 5 + 6 + 1 + 569 + 6 + 41 = 666.

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 38561569641 - 2⁷ = 38561569513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38561569621) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 37113600 + ... + 37114638.

Almost surely, 2^38561569641 is an apocalyptic number.

38561569641 is the 196371-st square number.

38561569641 is the 98186-th centered octagonal number.

It is an amenable number.

38561569641 is a deficient number, since it is larger than the sum of its proper divisors (28758461220).

38561569641 is an frugal number, since it uses more digits than its factorization.

38561569641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110 (or 1049 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 38561569641 in words is "thirty-eight billion, five hundred sixty-one million, five hundred sixty-nine thousand, six hundred forty-one".