11609265870465 has 16 divisors (see below), whose sum is σ = 19076847701568. Its totient is φ = 6024267694656.

The previous prime is 11609265870431. The next prime is 11609265870467. The reversal of 11609265870465 is 56407856290611.

11609265870465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11609265870465 is a prime.

It is a super-2 number, since 2×11609265870465² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11609265870399 and 11609265870408.

It is not an unprimeable number, because it can be changed into a prime (11609265870467) 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, 10458797527 + ... + 10458798636.

It is an arithmetic number, because the mean of its divisors is an integer number (1192302981348).

Almost surely, 2^{11609265870465} is an apocalyptic number.

11609265870465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11609265870465 is a deficient number, since it is larger than the sum of its proper divisors (7467581831103).

11609265870465 is a wasteful number, since it uses less digits than its factorization.

11609265870465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20917596208.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 11609265870465 in words is "eleven trillion, six hundred nine billion, two hundred sixty-five million, eight hundred seventy thousand, four hundred sixty-five".