11621645584265 has 8 divisors (see below), whose sum is σ = 13946063803848. Its totient is φ = 9297257065600.

The previous prime is 11621645584261. The next prime is 11621645584267. The reversal of 11621645584265 is 56248554612611.

It can be written as a sum of positive squares in 4 ways, for example, as 402924066169 + 11218721518096 = 634763^2 + 3349436^2 .

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

It is not a de Polignac number, because 11621645584265 - 2² = 11621645584261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11621645584265.

It is not an unprimeable number, because it can be changed into a prime (11621645584261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6555122 + ... + 8137131.

It is an arithmetic number, because the mean of its divisors is an integer number (1743257975481).

Almost surely, 2^{11621645584265} is an apocalyptic number.

It is an amenable number.

11621645584265 is a deficient number, since it is larger than the sum of its proper divisors (2324418219583).

11621645584265 is a wasteful number, since it uses less digits than its factorization.

11621645584265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850459.

The product of its digits is 13824000, while the sum is 56.

The spelling of 11621645584265 in words is "eleven trillion, six hundred twenty-one billion, six hundred forty-five million, five hundred eighty-four thousand, two hundred sixty-five".