55489702628 has 12 divisors (see below), whose sum is σ = 97190484720. Its totient is φ = 27720992712.

The previous prime is 55489702627. The next prime is 55489702651. The reversal of 55489702628 is 82620798455.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55489702627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5959418 + ... + 5968721.

It is an arithmetic number, because the mean of its divisors is an integer number (8099207060).

Almost surely, 2^55489702628 is an apocalyptic number.

It is an amenable number.

55489702628 is a deficient number, since it is larger than the sum of its proper divisors (41700782092).

55489702628 is a wasteful number, since it uses less digits than its factorization.

55489702628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929306 (or 11929304 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 55489702628 in words is "fifty-five billion, four hundred eighty-nine million, seven hundred two thousand, six hundred twenty-eight".