55638021676548 has 48 divisors (see below), whose sum is σ = 131453348362560. Its totient is φ = 18313933680000.

The previous prime is 55638021676529. The next prime is 55638021676553. The reversal of 55638021676548 is 84567612083655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60102603 + ... + 61021298.

It is an arithmetic number, because the mean of its divisors is an integer number (2738611424220).

Almost surely, 2^{55638021676548} is an apocalyptic number.

It is an amenable number.

55638021676548 is an abundant number, since it is smaller than the sum of its proper divisors (75815326686012).

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

55638021676548 is a wasteful number, since it uses less digits than its factorization.

55638021676548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121124388 (or 121124386 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 66.

The spelling of 55638021676548 in words is "fifty-five trillion, six hundred thirty-eight billion, twenty-one million, six hundred seventy-six thousand, five hundred forty-eight".