48664484581 has 4 divisors (see below), whose sum is σ = 48667611564. Its totient is φ = 48661357600.

The previous prime is 48664484579. The next prime is 48664484587. The reversal of 48664484581 is 18548446684.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47465593956 + 1198890625 = 217866^2 + 34625^2 .

It is a cyclic number.

It is not a de Polignac number, because 48664484581 - 2¹ = 48664484579 is a prime.

It is a super-2 number, since 2×48664484581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48664484587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1540030 + ... + 1571311.

It is an arithmetic number, because the mean of its divisors is an integer number (12166902891).

Almost surely, 2^48664484581 is an apocalyptic number.

It is an amenable number.

48664484581 is a deficient number, since it is larger than the sum of its proper divisors (3126983).

48664484581 is a wasteful number, since it uses less digits than its factorization.

48664484581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126982.

The product of its digits is 23592960, while the sum is 58.

The spelling of 48664484581 in words is "forty-eight billion, six hundred sixty-four million, four hundred eighty-four thousand, five hundred eighty-one".