2165011317501 has 16 divisors (see below), whose sum is σ = 3109277783040. Its totient is φ = 1335576135600.

The previous prime is 2165011317499. The next prime is 2165011317503. The reversal of 2165011317501 is 1057131105612.

It is an interprime number because it is at equal distance from previous prime (2165011317499) and next prime (2165011317503).

It is not a de Polignac number, because 2165011317501 - 2¹ = 2165011317499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165011317503) 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, 441656325 + ... + 441661226.

It is an arithmetic number, because the mean of its divisors is an integer number (194329861440).

Almost surely, 2^{2165011317501} is an apocalyptic number.

It is an amenable number.

2165011317501 is a deficient number, since it is larger than the sum of its proper divisors (944266465539).

2165011317501 is a wasteful number, since it uses less digits than its factorization.

2165011317501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883317616.

The product of its (nonzero) digits is 6300, while the sum is 33.

The spelling of 2165011317501 in words is "two trillion, one hundred sixty-five billion, eleven million, three hundred seventeen thousand, five hundred one".