12261607207465 has 24 divisors (see below), whose sum is σ = 18672221146752. Its totient is φ = 7643599296480.

The previous prime is 12261607207403. The next prime is 12261607207523. The reversal of 12261607207465 is 56470270616221.

It is not a de Polignac number, because 12261607207465 - 2¹¹ = 12261607205417 is a prime.

It is a super-2 number, since 2×12261607207465² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2274878049 + ... + 2274883438.

It is an arithmetic number, because the mean of its divisors is an integer number (778009214448).

Almost surely, 2^{12261607207465} is an apocalyptic number.

It is an amenable number.

12261607207465 is a deficient number, since it is larger than the sum of its proper divisors (6410613939287).

12261607207465 is a wasteful number, since it uses less digits than its factorization.

12261607207465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549761517 (or 4549761510 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 12261607207465 in words is "twelve trillion, two hundred sixty-one billion, six hundred seven million, two hundred seven thousand, four hundred sixty-five".