55331661415665 has 8 divisors (see below), whose sum is σ = 88530658265088. Its totient is φ = 29510219421680.

The previous prime is 55331661415649. The next prime is 55331661415697. The reversal of 55331661415665 is 56651416613355.

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

It is not a de Polignac number, because 55331661415665 - 2⁴ = 55331661415649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844388713841 + ... + 1844388713870.

It is an arithmetic number, because the mean of its divisors is an integer number (11066332283136).

Almost surely, 2^{55331661415665} is an apocalyptic number.

It is an amenable number.

55331661415665 is a deficient number, since it is larger than the sum of its proper divisors (33198996849423).

55331661415665 is a wasteful number, since it uses less digits than its factorization.

55331661415665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688777427719.

The product of its digits is 29160000, while the sum is 57.

The spelling of 55331661415665 in words is "fifty-five trillion, three hundred thirty-one billion, six hundred sixty-one million, four hundred fifteen thousand, six hundred sixty-five".