2155536602340 has 192 divisors, whose sum is σ = 6935368366080. Its totient is φ = 494719488000.

The previous prime is 2155536602287. The next prime is 2155536602341. The reversal of 2155536602340 is 432066355512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2155536602292 and 2155536602301.

It is not an unprimeable number, because it can be changed into a prime (2155536602341) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18891060 + ... + 19004820.

It is an arithmetic number, because the mean of its divisors is an integer number (36121710240).

Almost surely, 2^{2155536602340} is an apocalyptic number.

2155536602340 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 2155536602340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3467684183040).

2155536602340 is an abundant number, since it is smaller than the sum of its proper divisors (4779831763740).

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

2155536602340 is a wasteful number, since it uses less digits than its factorization.

2155536602340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115314 (or 115312 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 2155536602340 in words is "two trillion, one hundred fifty-five billion, five hundred thirty-six million, six hundred two thousand, three hundred forty".