581000367061 has 4 divisors (see below), whose sum is σ = 581192563392. Its totient is φ = 580808170732.

The previous prime is 581000367011. The next prime is 581000367067. The reversal of 581000367061 is 160763000185.

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 581000367061 - 2⁹ = 581000366549 is a prime.

It is a super-2 number, since 2×581000367061² (a number of 24 digits) contains 22 as substring.

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 581000367061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581000367067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96093631 + ... + 96099676.

It is an arithmetic number, because the mean of its divisors is an integer number (145298140848).

Almost surely, 2^581000367061 is an apocalyptic number.

It is an amenable number.

581000367061 is a deficient number, since it is larger than the sum of its proper divisors (192196331).

581000367061 is a wasteful number, since it uses less digits than its factorization.

581000367061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192196330.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 581000367061 in words is "five hundred eighty-one billion, three hundred sixty-seven thousand, sixty-one".