55421816995 has 8 divisors (see below), whose sum is σ = 68052836016. Its totient is φ = 43306349856.

The previous prime is 55421816963. The next prime is 55421817103. The reversal of 55421816995 is 59961812455.

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

It is a cyclic number.

It is not a de Polignac number, because 55421816995 - 2⁵ = 55421816963 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 128887732 + ... + 128888161.

It is an arithmetic number, because the mean of its divisors is an integer number (8506604502).

Almost surely, 2^55421816995 is an apocalyptic number.

55421816995 is a deficient number, since it is larger than the sum of its proper divisors (12631019021).

55421816995 is a wasteful number, since it uses less digits than its factorization.

55421816995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257775941.

The product of its digits is 3888000, while the sum is 55.

The spelling of 55421816995 in words is "fifty-five billion, four hundred twenty-one million, eight hundred sixteen thousand, nine hundred ninety-five".