55851586311 has 4 divisors (see below), whose sum is σ = 74468781752. Its totient is φ = 37234390872.

The previous prime is 55851586309. The next prime is 55851586339. The reversal of 55851586311 is 11368515855.

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

It is not a de Polignac number, because 55851586311 - 2¹ = 55851586309 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 (55851566311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9308597716 + ... + 9308597721.

It is an arithmetic number, because the mean of its divisors is an integer number (18617195438).

Almost surely, 2^55851586311 is an apocalyptic number.

55851586311 is a deficient number, since it is larger than the sum of its proper divisors (18617195441).

55851586311 is a wasteful number, since it uses less digits than its factorization.

55851586311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617195440.

The product of its digits is 720000, while the sum is 48.

The spelling of 55851586311 in words is "fifty-five billion, eight hundred fifty-one million, five hundred eighty-six thousand, three hundred eleven".