1815065320411 has 16 divisors (see below), whose sum is σ = 2087713323520. Its totient is φ = 1545784974720.

The previous prime is 1815065320399. The next prime is 1815065320423. The reversal of 1815065320411 is 1140235605181.

It is an interprime number because it is at equal distance from previous prime (1815065320399) and next prime (1815065320423).

It is not a de Polignac number, because 1815065320411 - 2⁵ = 1815065320379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1815065320451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484821 + ... + 1966006.

It is an arithmetic number, because the mean of its divisors is an integer number (130482082720).

Almost surely, 2^{1815065320411} is an apocalyptic number.

1815065320411 is a deficient number, since it is larger than the sum of its proper divisors (272648003109).

1815065320411 is a wasteful number, since it uses less digits than its factorization.

1815065320411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451514.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 1815065320411 in words is "one trillion, eight hundred fifteen billion, sixty-five million, three hundred twenty thousand, four hundred eleven".