2155041130420 has 48 divisors (see below), whose sum is σ = 4672199282688. Its totient is φ = 834097639680.

The previous prime is 2155041130387. The next prime is 2155041130421. The reversal of 2155041130420 is 240311405512.

It is a super-2 number, since 2×2155041130420² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155041130421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4472272 + ... + 4930648.

It is an arithmetic number, because the mean of its divisors is an integer number (97337485056).

Almost surely, 2^{2155041130420} is an apocalyptic number.

2155041130420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155041130420 is an abundant number, since it is smaller than the sum of its proper divisors (2517158152268).

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

2155041130420 is a wasteful number, since it uses less digits than its factorization.

2155041130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466000 (or 465998 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 2155041130420 its reverse (240311405512), we get a palindrome (2395352535932).

The spelling of 2155041130420 in words is "two trillion, one hundred fifty-five billion, forty-one million, one hundred thirty thousand, four hundred twenty".