581255653481 has 8 divisors (see below), whose sum is σ = 583801362144. Its totient is φ = 578710381600.

The previous prime is 581255653471. The next prime is 581255653499. The reversal of 581255653481 is 184356552185.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 581255653481 - 2¹⁰ = 581255652457 is a prime.

It is a super-2 number, since 2×581255653481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (581255653471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717906 + ... + 2923956.

It is an arithmetic number, because the mean of its divisors is an integer number (72975170268).

Almost surely, 2^581255653481 is an apocalyptic number.

It is an amenable number.

581255653481 is a deficient number, since it is larger than the sum of its proper divisors (2545708663).

581255653481 is a wasteful number, since it uses less digits than its factorization.

581255653481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218391.

The product of its digits is 5760000, while the sum is 53.

The spelling of 581255653481 in words is "five hundred eighty-one billion, two hundred fifty-five million, six hundred fifty-three thousand, four hundred eighty-one".