581745222157 has 8 divisors (see below), whose sum is σ = 637919398080. Its totient is φ = 526119087360.

The previous prime is 581745222143. The next prime is 581745222221. The reversal of 581745222157 is 751222547185.

581745222157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581745222157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 581745222157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581745222557) 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, 137008057 + ... + 137012302.

It is an arithmetic number, because the mean of its divisors is an integer number (79739924760).

Almost surely, 2^581745222157 is an apocalyptic number.

It is an amenable number.

581745222157 is a deficient number, since it is larger than the sum of its proper divisors (56174175923).

581745222157 is a wasteful number, since it uses less digits than its factorization.

581745222157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274020563.

The product of its digits is 1568000, while the sum is 49.

The spelling of 581745222157 in words is "five hundred eighty-one billion, seven hundred forty-five million, two hundred twenty-two thousand, one hundred fifty-seven".