11887569407 has 16 divisors (see below), whose sum is σ = 13945280064. Its totient is φ = 9923040000.

The previous prime is 11887569371. The next prime is 11887569409. The reversal of 11887569407 is 70496578811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11887569407 - 2¹⁶ = 11887503871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887569409) 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, 94694 + ... + 180947.

It is an arithmetic number, because the mean of its divisors is an integer number (871580004).

Almost surely, 2^11887569407 is an apocalyptic number.

11887569407 is a deficient number, since it is larger than the sum of its proper divisors (2057710657).

11887569407 is a wasteful number, since it uses less digits than its factorization.

11887569407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275810.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 11887569407 in words is "eleven billion, eight hundred eighty-seven million, five hundred sixty-nine thousand, four hundred seven".