54163106561 has 4 divisors (see below), whose sum is σ = 57013796400. Its totient is φ = 51312416724.

The previous prime is 54163106531. The next prime is 54163106563. The reversal of 54163106561 is 16560136145.

54163106561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54163106561 - 2³⁰ = 53089364737 is a prime.

It is a super-2 number, since 2×54163106561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54163106563) 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, 1425344891 + ... + 1425344928.

It is an arithmetic number, because the mean of its divisors is an integer number (14253449100).

Almost surely, 2^54163106561 is an apocalyptic number.

It is an amenable number.

54163106561 is a deficient number, since it is larger than the sum of its proper divisors (2850689839).

54163106561 is a wasteful number, since it uses less digits than its factorization.

54163106561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850689838.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 54163106561 in words is "fifty-four billion, one hundred sixty-three million, one hundred six thousand, five hundred sixty-one".