48585573581 has 2 divisors, whose sum is σ = 48585573582. Its totient is φ = 48585573580.

The previous prime is 48585573527. The next prime is 48585573587. The reversal of 48585573581 is 18537558584.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48547071556 + 38502025 = 220334^2 + 6205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48585573581 is a prime.

It is a super-2 number, since 2×48585573581² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 48585573581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48585573587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24292786790 + 24292786791.

It is an arithmetic number, because the mean of its divisors is an integer number (24292786791).

Almost surely, 2^48585573581 is an apocalyptic number.

It is an amenable number.

48585573581 is a deficient number, since it is larger than the sum of its proper divisors (1).

48585573581 is an equidigital number, since it uses as much as digits as its factorization.

48585573581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880000, while the sum is 59.

The spelling of 48585573581 in words is "forty-eight billion, five hundred eighty-five million, five hundred seventy-three thousand, five hundred eighty-one".