54948017871865 has 4 divisors (see below), whose sum is σ = 65937621446244. Its totient is φ = 43958414297488.

The previous prime is 54948017871853. The next prime is 54948017871881. The reversal of 54948017871865 is 56817871084945.

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 34041203546256 + 20906814325609 = 5834484^2 + 4572397^2 .

It is a cyclic number.

It is not a de Polignac number, because 54948017871865 - 2³¹ = 54945870388217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5494801787182 + ... + 5494801787191.

It is an arithmetic number, because the mean of its divisors is an integer number (16484405361561).

Almost surely, 2^{54948017871865} is an apocalyptic number.

It is an amenable number.

54948017871865 is a deficient number, since it is larger than the sum of its proper divisors (10989603574379).

54948017871865 is a wasteful number, since it uses less digits than its factorization.

54948017871865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989603574378.

The product of its (nonzero) digits is 541900800, while the sum is 73.

The spelling of 54948017871865 in words is "fifty-four trillion, nine hundred forty-eight billion, seventeen million, eight hundred seventy-one thousand, eight hundred sixty-five".