55219977943994 has 8 divisors (see below), whose sum is σ = 82881128111040. Its totient is φ = 27592935240316.

The previous prime is 55219977943993. The next prime is 55219977944017. The reversal of 55219977943994 is 49934977991255.

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

It is not an unprimeable number, because it can be changed into a prime (55219977943993) 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, 8526861794 + ... + 8526868269.

It is an arithmetic number, because the mean of its divisors is an integer number (10360141013880).

Almost surely, 2^{55219977943994} is an apocalyptic number.

55219977943994 is a deficient number, since it is larger than the sum of its proper divisors (27661150167046).

55219977943994 is a wasteful number, since it uses less digits than its factorization.

55219977943994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17053731684.

The product of its digits is 6944162400, while the sum is 83.

The spelling of 55219977943994 in words is "fifty-five trillion, two hundred nineteen billion, nine hundred seventy-seven million, nine hundred forty-three thousand, nine hundred ninety-four".