1081649325605 has 8 divisors (see below), whose sum is σ = 1298112525600. Its totient is φ = 865230570576.

The previous prime is 1081649325593. The next prime is 1081649325641. The reversal of 1081649325605 is 5065239461801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081649325605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11057675 + ... + 11155064.

It is an arithmetic number, because the mean of its divisors is an integer number (162264065700).

Almost surely, 2^{1081649325605} is an apocalyptic number.

It is an amenable number.

1081649325605 is a deficient number, since it is larger than the sum of its proper divisors (216463199995).

1081649325605 is an equidigital number, since it uses as much as digits as its factorization.

1081649325605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222483.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 1081649325605 in words is "one trillion, eighty-one billion, six hundred forty-nine million, three hundred twenty-five thousand, six hundred five".