11878549258 has 4 divisors (see below), whose sum is σ = 17817823890. Its totient is φ = 5939274628.

The previous prime is 11878549231. The next prime is 11878549261. The reversal of 11878549258 is 85294587811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85294587811 = 185723 ⋅459257.

It can be written as a sum of positive squares in only one way, i.e., 11200623889 + 677925369 = 105833^2 + 26037^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2969637313 + ... + 2969637316.

Almost surely, 2^11878549258 is an apocalyptic number.

11878549258 is a deficient number, since it is larger than the sum of its proper divisors (5939274632).

11878549258 is an equidigital number, since it uses as much as digits as its factorization.

11878549258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939274631.

The product of its digits is 6451200, while the sum is 58.

The spelling of 11878549258 in words is "eleven billion, eight hundred seventy-eight million, five hundred forty-nine thousand, two hundred fifty-eight".