581220557817374 has 16 divisors (see below), whose sum is σ = 909737405965440. Its totient is φ = 277974780292440.

The previous prime is 581220557817293. The next prime is 581220557817377. The reversal of 581220557817374 is 473718755022185.

It is a super-3 number, since 3×581220557817374³ (a number of 45 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 581220557817374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581220557817377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46850369 + ... + 57943059.

It is an arithmetic number, because the mean of its divisors is an integer number (56858587872840).

Almost surely, 2^{581220557817374} is an apocalyptic number.

581220557817374 is a deficient number, since it is larger than the sum of its proper divisors (328516848148066).

581220557817374 is a wasteful number, since it uses less digits than its factorization.

581220557817374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231775.

The product of its (nonzero) digits is 131712000, while the sum is 65.

The spelling of 581220557817374 in words is "five hundred eighty-one trillion, two hundred twenty billion, five hundred fifty-seven million, eight hundred seventeen thousand, three hundred seventy-four".