2155630774352 has 160 divisors (see below), whose sum is σ = 4982945071104. Its totient is φ = 891892684800.

The previous prime is 2155630774307. The next prime is 2155630774357. The reversal of 2155630774352 is 2534770365512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155630774352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155630774357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171306653 + ... + 171319235.

Almost surely, 2^{2155630774352} is an apocalyptic number.

2155630774352 is a gapful number since it is divisible by the number (22) 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 2155630774352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2491472535552).

2155630774352 is an abundant number, since it is smaller than the sum of its proper divisors (2827314296752).

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

2155630774352 is a wasteful number, since it uses less digits than its factorization.

2155630774352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14497 (or 14491 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 50.

The spelling of 2155630774352 in words is "two trillion, one hundred fifty-five billion, six hundred thirty million, seven hundred seventy-four thousand, three hundred fifty-two".