53861581000581 has 8 divisors (see below), whose sum is σ = 71815479542304. Its totient is φ = 35907701562960.

The previous prime is 53861581000571. The next prime is 53861581000589. The reversal of 53861581000581 is 18500018516835.

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

It is not a de Polignac number, because 53861581000581 - 2⁹ = 53861581000069 is a prime.

It is a super-2 number, since 2×53861581000581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53861581000589) 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, 4226911 + ... + 11206691.

It is an arithmetic number, because the mean of its divisors is an integer number (8976934942788).

Almost surely, 2^{53861581000581} is an apocalyptic number.

It is an amenable number.

53861581000581 is a deficient number, since it is larger than the sum of its proper divisors (17953898541723).

53861581000581 is a wasteful number, since it uses less digits than its factorization.

53861581000581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9552051.

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 53861581000581 in words is "fifty-three trillion, eight hundred sixty-one billion, five hundred eighty-one million, five hundred eighty-one", and thus it is an aban number.