54359169991 has 4 divisors (see below), whose sum is σ = 62124765712. Its totient is φ = 46593574272.

The previous prime is 54359169983. The next prime is 54359170027. The reversal of 54359169991 is 19996195345.

54359169991 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.

It is not a de Polignac number, because 54359169991 - 2³ = 54359169983 is a prime.

It is a super-2 number, since 2×54359169991² (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 (54359169911) 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, 3882797850 + ... + 3882797863.

It is an arithmetic number, because the mean of its divisors is an integer number (15531191428).

Almost surely, 2^54359169991 is an apocalyptic number.

54359169991 is a deficient number, since it is larger than the sum of its proper divisors (7765595721).

54359169991 is an equidigital number, since it uses as much as digits as its factorization.

54359169991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7765595720.

The product of its digits is 11809800, while the sum is 61.

The spelling of 54359169991 in words is "fifty-four billion, three hundred fifty-nine million, one hundred sixty-nine thousand, nine hundred ninety-one".