2155300000000 has 324 divisors, whose sum is σ = 6147965602240. Its totient is φ = 738720000000.

The previous prime is 2155299999977. The next prime is 2155300000001. The reversal of 2155300000000 is 35512.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a self number, because there is not a number n which added to its sum of digits gives 2155300000000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155300000001) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 699998461 + ... + 700001539.

Almost surely, 2^{2155300000000} is an apocalyptic number.

2155300000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155300000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3073982801120).

2155300000000 is an abundant number, since it is smaller than the sum of its proper divisors (3992665602240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155300000000 is an frugal number, since it uses more digits than its factorization.

2155300000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

Adding to 2155300000000 its reverse (35512), we get a palindrome (2155300035512).

The spelling of 2155300000000 in words is "two trillion, one hundred fifty-five billion, three hundred million", and thus it is an aban number.