11868986477 has 4 divisors (see below), whose sum is σ = 11869214076. Its totient is φ = 11868758880.

The previous prime is 11868986453. The next prime is 11868986497. The reversal of 11868986477 is 77468986811.

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 4232673481 + 7636312996 = 65059^2 + 87386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11868986477 - 2⁶ = 11868986413 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 (11868986497) 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, 7577 + ... + 154257.

It is an arithmetic number, because the mean of its divisors is an integer number (2967303519).

Almost surely, 2^11868986477 is an apocalyptic number.

It is an amenable number.

11868986477 is a deficient number, since it is larger than the sum of its proper divisors (227599).

11868986477 is an equidigital number, since it uses as much as digits as its factorization.

11868986477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227598.

The product of its digits is 32514048, while the sum is 65.

The spelling of 11868986477 in words is "eleven billion, eight hundred sixty-eight million, nine hundred eighty-six thousand, four hundred seventy-seven".