38312553561 has 4 divisors (see below), whose sum is σ = 51083404752. Its totient is φ = 25541702372.

The previous prime is 38312553541. The next prime is 38312553569. The reversal of 38312553561 is 16535521383.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38312553561 - 2⁹ = 38312553049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38312553569) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6385425591 + ... + 6385425596.

It is an arithmetic number, because the mean of its divisors is an integer number (12770851188).

Almost surely, 2^38312553561 is an apocalyptic number.

It is an amenable number.

38312553561 is a deficient number, since it is larger than the sum of its proper divisors (12770851191).

38312553561 is a wasteful number, since it uses less digits than its factorization.

38312553561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12770851190.

The product of its digits is 324000, while the sum is 42.

The spelling of 38312553561 in words is "thirty-eight billion, three hundred twelve million, five hundred fifty-three thousand, five hundred sixty-one".