55620275788 has 48 divisors (see below), whose sum is σ = 121526915328. Its totient is φ = 21639240000.

The previous prime is 55620275783. The next prime is 55620275819. The reversal of 55620275788 is 88757202655.

55620275788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55620275783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87103 + ... + 344713.

It is an arithmetic number, because the mean of its divisors is an integer number (2531810736).

Almost surely, 2^55620275788 is an apocalyptic number.

It is an amenable number.

55620275788 is an abundant number, since it is smaller than the sum of its proper divisors (65906639540).

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

55620275788 is a wasteful number, since it uses less digits than its factorization.

55620275788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258334 (or 258332 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 55620275788 in words is "fifty-five billion, six hundred twenty million, two hundred seventy-five thousand, seven hundred eighty-eight".