54421631065 has 4 divisors (see below), whose sum is σ = 65305957284. Its totient is φ = 43537304848.

The previous prime is 54421631063. The next prime is 54421631083. The reversal of 54421631065 is 56013612445.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16755749136 + 37665881929 = 129444^2 + 194077^2 .

It is a cyclic number.

It is not a de Polignac number, because 54421631065 - 2¹ = 54421631063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54421631063) 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, 5442163102 + ... + 5442163111.

It is an arithmetic number, because the mean of its divisors is an integer number (16326489321).

Almost surely, 2^54421631065 is an apocalyptic number.

It is an amenable number.

54421631065 is a deficient number, since it is larger than the sum of its proper divisors (10884326219).

54421631065 is a wasteful number, since it uses less digits than its factorization.

54421631065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10884326218.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 54421631065 in words is "fifty-four billion, four hundred twenty-one million, six hundred thirty-one thousand, sixty-five".