2155333340 has 24 divisors (see below), whose sum is σ = 4527156480. Its totient is φ = 861951168.

The previous prime is 2155333319. The next prime is 2155333393. The reversal of 2155333340 is 433335512.

2155333340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126149 + ... + 142211.

It is an arithmetic number, because the mean of its divisors is an integer number (188631520).

Almost surely, 2^2155333340 is an apocalyptic number.

2155333340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155333340 is an abundant number, since it is smaller than the sum of its proper divisors (2371823140).

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

2155333340 is a wasteful number, since it uses less digits than its factorization.

2155333340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22781 (or 22779 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 29.

The square root of 2155333340 is about 46425.5677402011. The cubic root of 2155333340 is about 1291.7292155535.

Adding to 2155333340 its reverse (433335512), we get a palindrome (2588668852).

The spelling of 2155333340 in words is "two billion, one hundred fifty-five million, three hundred thirty-three thousand, three hundred forty".