11987529459 has 8 divisors (see below), whose sum is σ = 16678301952. Its totient is φ = 7644221640.

The previous prime is 11987529409. The next prime is 11987529461. The reversal of 11987529459 is 95492578911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11987529459 - 2⁹ = 11987528947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11987529409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86866087 + ... + 86866224.

It is an arithmetic number, because the mean of its divisors is an integer number (2084787744).

Almost surely, 2^11987529459 is an apocalyptic number.

11987529459 is a deficient number, since it is larger than the sum of its proper divisors (4690772493).

11987529459 is a wasteful number, since it uses less digits than its factorization.

11987529459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173732337.

The product of its digits is 8164800, while the sum is 60.

The spelling of 11987529459 in words is "eleven billion, nine hundred eighty-seven million, five hundred twenty-nine thousand, four hundred fifty-nine".