55168551719 has 4 divisors (see below), whose sum is σ = 55314115560. Its totient is φ = 55022987880.

The previous prime is 55168551667. The next prime is 55168551749. The reversal of 55168551719 is 91715586155.

55168551719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91715586155 = 5 ⋅18343117231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55168551719 is a prime.

It is a super-2 number, since 2×55168551719² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55168551749) 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, 72781352 + ... + 72782109.

It is an arithmetic number, because the mean of its divisors is an integer number (13828528890).

Almost surely, 2^55168551719 is an apocalyptic number.

55168551719 is a deficient number, since it is larger than the sum of its proper divisors (145563841).

55168551719 is a wasteful number, since it uses less digits than its factorization.

55168551719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145563840.

The product of its digits is 1890000, while the sum is 53.

The spelling of 55168551719 in words is "fifty-five billion, one hundred sixty-eight million, five hundred fifty-one thousand, seven hundred nineteen".