55321601515885 has 8 divisors (see below), whose sum is σ = 68527403168256. Its totient is φ = 42829626979920.

The previous prime is 55321601515801. The next prime is 55321601515937. The reversal of 55321601515885 is 58851510612355.

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

It is not a de Polignac number, because 55321601515885 - 2²³ = 55321593127277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178456778929 + ... + 178456779238.

It is an arithmetic number, because the mean of its divisors is an integer number (8565925396032).

Almost surely, 2^{55321601515885} is an apocalyptic number.

It is an amenable number.

55321601515885 is a deficient number, since it is larger than the sum of its proper divisors (13205801652371).

55321601515885 is a wasteful number, since it uses less digits than its factorization.

55321601515885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356913558203.

The product of its (nonzero) digits is 7200000, while the sum is 55.

The spelling of 55321601515885 in words is "fifty-five trillion, three hundred twenty-one billion, six hundred one million, five hundred fifteen thousand, eight hundred eighty-five".