11878376487 has 8 divisors (see below), whose sum is σ = 15838597104. Its totient is φ = 7918536768.

The previous prime is 11878376449. The next prime is 11878376507. The reversal of 11878376487 is 78467387811.

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

It is not a de Polignac number, because 11878376487 - 2²³ = 11869987879 is a prime.

It is a super-2 number, since 2×11878376487² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11878376487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878376417) 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, 12088 + ... + 154605.

It is an arithmetic number, because the mean of its divisors is an integer number (1979824638).

Almost surely, 2^11878376487 is an apocalyptic number.

11878376487 is a deficient number, since it is larger than the sum of its proper divisors (3960220617).

11878376487 is a wasteful number, since it uses less digits than its factorization.

11878376487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190449.

The product of its digits is 12644352, while the sum is 60.

The spelling of 11878376487 in words is "eleven billion, eight hundred seventy-eight million, three hundred seventy-six thousand, four hundred eighty-seven".