54128891045 has 6 divisors (see below), whose sum is σ = 64955293542. Its totient is φ = 43302696648.

The previous prime is 54128891039. The next prime is 54128891053. The reversal of 54128891045 is 54019882145.

It can be written as a sum of positive squares in only one way, i.e., 43303112836 + 10825778209 = 208094^2 + 104047^2 .

It is not a de Polignac number, because 54128891045 - 2²⁰ = 54127842469 is a prime.

It is a super-2 number, since 2×54128891045² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468212 + ... + 572258.

It is an arithmetic number, because the mean of its divisors is an integer number (10825882257).

Almost surely, 2^54128891045 is an apocalyptic number.

It is an amenable number.

54128891045 is a deficient number, since it is larger than the sum of its proper divisors (10826402497).

54128891045 is an frugal number, since it uses more digits than its factorization.

54128891045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208099 (or 104052 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 54128891045 in words is "fifty-four billion, one hundred twenty-eight million, eight hundred ninety-one thousand, forty-five".