11861252469 has 32 divisors (see below), whose sum is σ = 19280592000. Its totient is φ = 7147054080.

The previous prime is 11861252437. The next prime is 11861252497. The reversal of 11861252469 is 96425216811.

11861252469 is a `hidden beast` number, since 1 + 1 + 8 + 61 + 2 + 524 + 69 = 666.

It is not a de Polignac number, because 11861252469 - 2⁵ = 11861252437 is a prime.

It is a super-2 number, since 2×11861252469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861252969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64044 + ... + 166805.

It is an arithmetic number, because the mean of its divisors is an integer number (602518500).

Almost surely, 2^11861252469 is an apocalyptic number.

It is an amenable number.

11861252469 is a deficient number, since it is larger than the sum of its proper divisors (7419339531).

11861252469 is a wasteful number, since it uses less digits than its factorization.

11861252469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231042 (or 231036 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 11861252469 in words is "eleven billion, eight hundred sixty-one million, two hundred fifty-two thousand, four hundred sixty-nine".