65555903992 has 32 divisors (see below), whose sum is σ = 123531735600. Its totient is φ = 32614444800.

The previous prime is 65555903989. The next prime is 65555904023. The reversal of 65555903992 is 29930955556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573267 + ... + 1614397.

Almost surely, 2^65555903992 is an apocalyptic number.

It is an amenable number.

65555903992 is a deficient number, since it is larger than the sum of its proper divisors (57975831608).

65555903992 is a wasteful number, since it uses less digits than its factorization.

65555903992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42127 (or 42123 counting only the distinct ones).

The product of its (nonzero) digits is 16402500, while the sum is 58.

The spelling of 65555903992 in words is "sixty-five billion, five hundred fifty-five million, nine hundred three thousand, nine hundred ninety-two".