11309321722645 has 24 divisors (see below), whose sum is σ = 14268897785016. Its totient is φ = 8604065678208.

The previous prime is 11309321722631. The next prime is 11309321722697. The reversal of 11309321722645 is 54622712390311.

It can be written as a sum of positive squares in 4 ways, for example, as 6177456731601 + 5131864991044 = 2485449^2 + 2265362^2 .

It is not a de Polignac number, because 11309321722645 - 2⁵ = 11309321722613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11309321722595 and 11309321722604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11900034 + ... + 12815203.

It is an arithmetic number, because the mean of its divisors is an integer number (594537407709).

Almost surely, 2^{11309321722645} is an apocalyptic number.

It is an amenable number.

11309321722645 is a deficient number, since it is larger than the sum of its proper divisors (2959576062371).

11309321722645 is a wasteful number, since it uses less digits than its factorization.

11309321722645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24715461 (or 24715438 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 11309321722645 in words is "eleven trillion, three hundred nine billion, three hundred twenty-one million, seven hundred twenty-two thousand, six hundred forty-five".