2156340060 has 432 divisors, whose sum is σ = 7999598880. Its totient is φ = 468357120.

The previous prime is 2156340047. The next prime is 2156340073. The reversal of 2156340060 is 600436512.

2156340060 is a `hidden beast` number, since 2 + 1 + 563 + 40 + 0 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (2156340047) and next prime (2156340073).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 24228496 + ... + 24228584.

It is an arithmetic number, because the mean of its divisors is an integer number (18517590).

Almost surely, 2^2156340060 is an apocalyptic number.

2156340060 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 2156340060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3999799440).

2156340060 is an abundant number, since it is smaller than the sum of its proper divisors (5843258820).

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

2156340060 is a wasteful number, since it uses less digits than its factorization.

2156340060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2156340060 is about 46436.4087758733. The cubic root of 2156340060 is about 1291.9302992556.

Adding to 2156340060 its reverse (600436512), we get a palindrome (2756776572).

The spelling of 2156340060 in words is "two billion, one hundred fifty-six million, three hundred forty thousand, sixty".