55984989670 has 32 divisors (see below), whose sum is σ = 102506977440. Its totient is φ = 22008856320.

The previous prime is 55984989647. The next prime is 55984989689. The reversal of 55984989670 is 7698948955.

It is a self number, because there is not a number n which added to its sum of digits gives 55984989670.

It is a congruent number.

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, 2924530 + ... + 2943610.

It is an arithmetic number, because the mean of its divisors is an integer number (3203343045).

Almost surely, 2^55984989670 is an apocalyptic number.

55984989670 is a deficient number, since it is larger than the sum of its proper divisors (46521987770).

55984989670 is a wasteful number, since it uses less digits than its factorization.

55984989670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24120.

The product of its (nonzero) digits is 195955200, while the sum is 70.

The spelling of 55984989670 in words is "fifty-five billion, nine hundred eighty-four million, nine hundred eighty-nine thousand, six hundred seventy".