11622553065 has 12 divisors (see below), whose sum is σ = 20145758724. Its totient is φ = 6198694944.

The previous prime is 11622553021. The next prime is 11622553087. The reversal of 11622553065 is 56035522611.

11622553065 is a `hidden beast` number, since 1 + 1 + 62 + 2 + 5 + 530 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7694272089 + 3928280976 = 87717^2 + 62676^2 .

It is not a de Polignac number, because 11622553065 - 2⁷ = 11622552937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129139434 + ... + 129139523.

It is an arithmetic number, because the mean of its divisors is an integer number (1678813227).

Almost surely, 2^11622553065 is an apocalyptic number.

11622553065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11622553065 is a deficient number, since it is larger than the sum of its proper divisors (8523205659).

11622553065 is a wasteful number, since it uses less digits than its factorization.

11622553065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258278968 (or 258278965 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 11622553065 in words is "eleven billion, six hundred twenty-two million, five hundred fifty-three thousand, sixty-five".