55383981663 has 8 divisors (see below), whose sum is σ = 73862828800. Its totient is φ = 36913894488.

The previous prime is 55383981637. The next prime is 55383981671. The reversal of 55383981663 is 36618938355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55383981663 - 2⁶ = 55383981599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55383911663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175223 + ... + 2200536.

It is an arithmetic number, because the mean of its divisors is an integer number (9232853600).

Almost surely, 2^55383981663 is an apocalyptic number.

55383981663 is a deficient number, since it is larger than the sum of its proper divisors (18478847137).

55383981663 is a wasteful number, since it uses less digits than its factorization.

55383981663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379981.

The product of its digits is 13996800, while the sum is 57.

The spelling of 55383981663 in words is "fifty-five billion, three hundred eighty-three million, nine hundred eighty-one thousand, six hundred sixty-three".