55348609851 has 42 divisors (see below), whose sum is σ = 87396301860. Its totient is φ = 34939529496.

The previous prime is 55348609847. The next prime is 55348609861. The reversal of 55348609851 is 15890684355.

55348609851 is a `hidden beast` number, since 553 + 4 + 8 + 6 + 0 + 9 + 85 + 1 = 666.

It is not a de Polignac number, because 55348609851 - 2² = 55348609847 is a prime.

It is a super-2 number, since 2×55348609851² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55348609861) by changing a digit.

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 41 ways as a sum of consecutive naturals, for example, 27687150 + ... + 27689148.

It is an arithmetic number, because the mean of its divisors is an integer number (2080864330).

Almost surely, 2^55348609851 is an apocalyptic number.

55348609851 is a deficient number, since it is larger than the sum of its proper divisors (32047692009).

55348609851 is an frugal number, since it uses more digits than its factorization.

55348609851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 55348609851 in words is "fifty-five billion, three hundred forty-eight million, six hundred nine thousand, eight hundred fifty-one".