65555945874 has 48 divisors (see below), whose sum is σ = 142731178200. Its totient is φ = 21745421568.

The previous prime is 65555945863. The next prime is 65555945929. The reversal of 65555945874 is 47854955556.

65555945874 is a `hidden beast` number, since 6 + 5 + 5 + 559 + 4 + 5 + 8 + 74 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 58765032225 + 6790913649 = 242415^2 + 82407^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13406422 + ... + 13411310.

Almost surely, 2^65555945874 is an apocalyptic number.

65555945874 is an abundant number, since it is smaller than the sum of its proper divisors (77175232326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65555945874 is a wasteful number, since it uses less digits than its factorization.

65555945874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379 (or 8376 counting only the distinct ones).

The product of its digits is 151200000, while the sum is 63.

The spelling of 65555945874 in words is "sixty-five billion, five hundred fifty-five million, nine hundred forty-five thousand, eight hundred seventy-four".