2011420402056 has 256 divisors, whose sum is σ = 6103278720000. Its totient is φ = 610089532416.

The previous prime is 2011420401997. The next prime is 2011420402063. The reversal of 2011420402056 is 6502040241102.

2011420402056 is a `hidden beast` number, since 20 + 11 + 420 + 4 + 0 + 205 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60279505 + ... + 60312863.

It is an arithmetic number, because the mean of its divisors is an integer number (23840932500).

Almost surely, 2^{2011420402056} is an apocalyptic number.

2011420402056 is a gapful number since it is divisible by the number (26) 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 2011420402056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3051639360000).

2011420402056 is an abundant number, since it is smaller than the sum of its proper divisors (4091858317944).

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

2011420402056 is a wasteful number, since it uses less digits than its factorization.

2011420402056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33693 (or 33683 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 2011420402056 its reverse (6502040241102), we get a palindrome (8513460643158).

The spelling of 2011420402056 in words is "two trillion, eleven billion, four hundred twenty million, four hundred two thousand, fifty-six".