54861063921 has 12 divisors (see below), whose sum is σ = 79254315972. Its totient is φ = 36569170176.

The previous prime is 54861063877. The next prime is 54861063947. The reversal of 54861063921 is 12936016845.

54861063921 is a `hidden beast` number, since 5 + 4 + 8 + 6 + 1 + 0 + 639 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27150800625 + 27710263296 = 164775^2 + 166464^2 .

It is not a de Polignac number, because 54861063921 - 2¹⁴ = 54861047537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54861063121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334056 + ... + 470441.

It is an arithmetic number, because the mean of its divisors is an integer number (6604526331).

Almost surely, 2^54861063921 is an apocalyptic number.

It is an amenable number.

54861063921 is a deficient number, since it is larger than the sum of its proper divisors (24393252051).

54861063921 is a wasteful number, since it uses less digits than its factorization.

54861063921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812080 (or 812077 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 54861063921 in words is "fifty-four billion, eight hundred sixty-one million, sixty-three thousand, nine hundred twenty-one".