2155523110005 has 32 divisors (see below), whose sum is σ = 3483146833920. Its totient is φ = 1138181002560.

The previous prime is 2155523109983. The next prime is 2155523110063. The reversal of 2155523110005 is 5000113255512.

It is not a de Polignac number, because 2155523110005 - 2¹² = 2155523105909 is a prime.

It is a super-2 number, since 2×2155523110005² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6435366 + ... + 6762024.

It is an arithmetic number, because the mean of its divisors is an integer number (108848338560).

Almost surely, 2^{2155523110005} is an apocalyptic number.

It is an amenable number.

2155523110005 is a deficient number, since it is larger than the sum of its proper divisors (1327623723915).

2155523110005 is a wasteful number, since it uses less digits than its factorization.

2155523110005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331041.

The product of its (nonzero) digits is 7500, while the sum is 30.

Adding to 2155523110005 its reverse (5000113255512), we get a palindrome (7155636365517).

The spelling of 2155523110005 in words is "two trillion, one hundred fifty-five billion, five hundred twenty-three million, one hundred ten thousand, five".