54541647649 has 4 divisors (see below), whose sum is σ = 55871931780. Its totient is φ = 53211363520.

The previous prime is 54541647617. The next prime is 54541647653. The reversal of 54541647649 is 94674614545.

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 7128762624 + 47412885025 = 84432^2 + 217745^2 .

It is a cyclic number.

It is not a de Polignac number, because 54541647649 - 2⁵ = 54541647617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54541647649.

It is not an unprimeable number, because it can be changed into a prime (54541647679) 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, 665142004 + ... + 665142085.

It is an arithmetic number, because the mean of its divisors is an integer number (13967982945).

Almost surely, 2^54541647649 is an apocalyptic number.

It is an amenable number.

54541647649 is a deficient number, since it is larger than the sum of its proper divisors (1330284131).

54541647649 is a wasteful number, since it uses less digits than its factorization.

54541647649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330284130.

The product of its digits is 14515200, while the sum is 55.

The spelling of 54541647649 in words is "fifty-four billion, five hundred forty-one million, six hundred forty-seven thousand, six hundred forty-nine".