55120896871 has 4 divisors (see below), whose sum is σ = 55255667200. Its totient is φ = 54986126544.

The previous prime is 55120896869. The next prime is 55120896899. The reversal of 55120896871 is 17869802155.

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

It is a cyclic number.

It is not a de Polignac number, because 55120896871 - 2¹ = 55120896869 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 (55120896841) 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, 67384551 + ... + 67385368.

It is an arithmetic number, because the mean of its divisors is an integer number (13813916800).

Almost surely, 2^55120896871 is an apocalyptic number.

55120896871 is a deficient number, since it is larger than the sum of its proper divisors (134770329).

55120896871 is a wasteful number, since it uses less digits than its factorization.

55120896871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134770328.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 55120896871 in words is "fifty-five billion, one hundred twenty million, eight hundred ninety-six thousand, eight hundred seventy-one".