1001681045213 has 4 divisors (see below), whose sum is σ = 1036221770940. Its totient is φ = 967140319488.

The previous prime is 1001681045207. The next prime is 1001681045231. The reversal of 1001681045213 is 3125401861001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 244088366809 + 757592678404 = 494053^2 + 870398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001681045213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001681045213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001681045243) 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, 17270362820 + ... + 17270362877.

It is an arithmetic number, because the mean of its divisors is an integer number (259055442735).

Almost surely, 2^{1001681045213} is an apocalyptic number.

It is an amenable number.

1001681045213 is a deficient number, since it is larger than the sum of its proper divisors (34540725727).

1001681045213 is an equidigital number, since it uses as much as digits as its factorization.

1001681045213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34540725726.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 1001681045213 in words is "one trillion, one billion, six hundred eighty-one million, forty-five thousand, two hundred thirteen".