11968280342487 has 24 divisors (see below), whose sum is σ = 19948978310144. Its totient is φ = 6772619108304.

The previous prime is 11968280342467. The next prime is 11968280342489. The reversal of 11968280342487 is 78424308286911.

It is a happy number.

11968280342487 is a `hidden beast` number, since 1 + 1 + 9 + 6 + 8 + 280 + 342 + 4 + 8 + 7 = 666.

It is not a de Polignac number, because 11968280342487 - 2⁸ = 11968280342231 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11968280342489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922191103 + ... + 922204080.

Almost surely, 2^{11968280342487} is an apocalyptic number.

11968280342487 is a deficient number, since it is larger than the sum of its proper divisors (7980697967657).

11968280342487 is a wasteful number, since it uses less digits than its factorization.

11968280342487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844395299 (or 1844395296 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 11968280342487 in words is "eleven trillion, nine hundred sixty-eight billion, two hundred eighty million, three hundred forty-two thousand, four hundred eighty-seven".