54857238288561 has 64 divisors (see below), whose sum is σ = 87863028480000. Its totient is φ = 33708903592896.

The previous prime is 54857238288553. The next prime is 54857238288581. The reversal of 54857238288561 is 16588283275845.

54857238288561 is a `hidden beast` number, since 5 + 4 + 8 + 5 + 7 + 2 + 38 + 28 + 8 + 561 = 666.

It is not a de Polignac number, because 54857238288561 - 2³ = 54857238288553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54857238288561.

It is not an unprimeable number, because it can be changed into a prime (54857238288581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 658200430 + ... + 658283768.

It is an arithmetic number, because the mean of its divisors is an integer number (1372859820000).

Almost surely, 2^{54857238288561} is an apocalyptic number.

It is an amenable number.

54857238288561 is a deficient number, since it is larger than the sum of its proper divisors (33005790191439).

54857238288561 is a wasteful number, since it uses less digits than its factorization.

54857238288561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118083 (or 118077 counting only the distinct ones).

The product of its digits is 1032192000, while the sum is 72.

The spelling of 54857238288561 in words is "fifty-four trillion, eight hundred fifty-seven billion, two hundred thirty-eight million, two hundred eighty-eight thousand, five hundred sixty-one".