4185876550991 has 4 divisors (see below), whose sum is σ = 4186114416000. Its totient is φ = 4185638685984.

The previous prime is 4185876550981. The next prime is 4185876551041. The reversal of 4185876550991 is 1990556785814.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4185876550991 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 (4185876550981) 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, 118906106 + ... + 118941303.

It is an arithmetic number, because the mean of its divisors is an integer number (1046528604000).

Almost surely, 2^{4185876550991} is an apocalyptic number.

4185876550991 is a deficient number, since it is larger than the sum of its proper divisors (237865009).

4185876550991 is a wasteful number, since it uses less digits than its factorization.

4185876550991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237865008.

The product of its (nonzero) digits is 108864000, while the sum is 68.

The spelling of 4185876550991 in words is "four trillion, one hundred eighty-five billion, eight hundred seventy-six million, five hundred fifty thousand, nine hundred ninety-one".