2156112050040 has 192 divisors, whose sum is σ = 7549286472000. Its totient is φ = 530531721216.

The previous prime is 2156112050023. The next prime is 2156112050101. The reversal of 2156112050040 is 400502116512.

2156112050040 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 112 + 0 + 500 + 40 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2156112049986 and 2156112050013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12300936 + ... + 12474984.

It is an arithmetic number, because the mean of its divisors is an integer number (39319200375).

Almost surely, 2^{2156112050040} is an apocalyptic number.

2156112050040 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 2156112050040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3774643236000).

2156112050040 is an abundant number, since it is smaller than the sum of its proper divisors (5393174421960).

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

2156112050040 is a wasteful number, since it uses less digits than its factorization.

2156112050040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176726 (or 176719 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 2156112050040 its reverse (400502116512), we get a palindrome (2556614166552).

The spelling of 2156112050040 in words is "two trillion, one hundred fifty-six billion, one hundred twelve million, fifty thousand, forty".