11878491293 has 4 divisors (see below), whose sum is σ = 11881127868. Its totient is φ = 11875854720.

The previous prime is 11878491283. The next prime is 11878491319. The reversal of 11878491293 is 39219487811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 620856889 + 11257634404 = 24917^2 + 106102^2 .

It is a cyclic number.

It is not a de Polignac number, because 11878491293 - 2¹⁰ = 11878490269 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 (11878491253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311518 + ... + 1320543.

It is an arithmetic number, because the mean of its divisors is an integer number (2970281967).

Almost surely, 2^11878491293 is an apocalyptic number.

It is an amenable number.

11878491293 is a deficient number, since it is larger than the sum of its proper divisors (2636575).

11878491293 is an equidigital number, since it uses as much as digits as its factorization.

11878491293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636574.

The product of its digits is 870912, while the sum is 53.

The spelling of 11878491293 in words is "eleven billion, eight hundred seventy-eight million, four hundred ninety-one thousand, two hundred ninety-three".