55210892081645 has 16 divisors (see below), whose sum is σ = 66265497163008. Its totient is φ = 44160430070400.

The previous prime is 55210892081623. The next prime is 55210892081659. The reversal of 55210892081645 is 54618029801255.

It is not a de Polignac number, because 55210892081645 - 2²² = 55210887887341 is a prime.

It is a super-3 number, since 3×55210892081645³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668363345 + ... + 668445945.

It is an arithmetic number, because the mean of its divisors is an integer number (4141593572688).

Almost surely, 2^{55210892081645} is an apocalyptic number.

It is an amenable number.

55210892081645 is a deficient number, since it is larger than the sum of its proper divisors (11054605081363).

55210892081645 is a wasteful number, since it uses less digits than its factorization.

55210892081645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106060.

The product of its (nonzero) digits is 6912000, while the sum is 56.

The spelling of 55210892081645 in words is "fifty-five trillion, two hundred ten billion, eight hundred ninety-two million, eighty-one thousand, six hundred forty-five".