1061350313581 has 4 divisors (see below), whose sum is σ = 1062904267872. Its totient is φ = 1059796359292.

The previous prime is 1061350313521. The next prime is 1061350313587. The reversal of 1061350313581 is 1853130531601.

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 1061350313581 - 2⁷ = 1061350313453 is a prime.

It is a super-2 number, since 2×1061350313581² (a number of 25 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 1061350313581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061350313587) 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 3 ways as a sum of consecutive naturals, for example, 776976121 + ... + 776977486.

It is an arithmetic number, because the mean of its divisors is an integer number (265726066968).

Almost surely, 2^{1061350313581} is an apocalyptic number.

It is an amenable number.

1061350313581 is a deficient number, since it is larger than the sum of its proper divisors (1553954291).

1061350313581 is an equidigital number, since it uses as much as digits as its factorization.

1061350313581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553954290.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 1061350313581 in words is "one trillion, sixty-one billion, three hundred fifty million, three hundred thirteen thousand, five hundred eighty-one".