54198381587 has 4 divisors (see below), whose sum is σ = 61941007536. Its totient is φ = 46455755640.

The previous prime is 54198381571. The next prime is 54198381607. The reversal of 54198381587 is 78518389145.

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

It is not a de Polignac number, because 54198381587 - 2⁴ = 54198381571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54198384587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3871312964 + ... + 3871312977.

It is an arithmetic number, because the mean of its divisors is an integer number (15485251884).

Almost surely, 2^54198381587 is an apocalyptic number.

54198381587 is a deficient number, since it is larger than the sum of its proper divisors (7742625949).

54198381587 is an equidigital number, since it uses as much as digits as its factorization.

54198381587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742625948.

The product of its digits is 9676800, while the sum is 59.

The spelling of 54198381587 in words is "fifty-four billion, one hundred ninety-eight million, three hundred eighty-one thousand, five hundred eighty-seven".