2155124420046 has 96 divisors (see below), whose sum is σ = 5202614158560. Its totient is φ = 640176590592.

The previous prime is 2155124420023. The next prime is 2155124420047. The reversal of 2155124420046 is 6400244215512.

2155124420046 is a `hidden beast` number, since 2 + 1 + 551 + 2 + 44 + 20 + 0 + 46 = 666.

It is a super-2 number, since 2×2155124420046² (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 (2155124420047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104948796 + ... + 104969328.

It is an arithmetic number, because the mean of its divisors is an integer number (54193897485).

Almost surely, 2^{2155124420046} is an apocalyptic number.

2155124420046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155124420046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2601307079280).

2155124420046 is an abundant number, since it is smaller than the sum of its proper divisors (3047489738514).

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

2155124420046 is a wasteful number, since it uses less digits than its factorization.

2155124420046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36050 (or 36047 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 2155124420046 its reverse (6400244215512), we get a palindrome (8555368635558).

The spelling of 2155124420046 in words is "two trillion, one hundred fifty-five billion, one hundred twenty-four million, four hundred twenty thousand, forty-six".