2156135445066 has 16 divisors (see below), whose sum is σ = 4382963856288. Its totient is φ = 706929654000.

The previous prime is 2156135445059. The next prime is 2156135445137. The reversal of 2156135445066 is 6605445316512.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945539860 + ... + 2945540591.

It is an arithmetic number, because the mean of its divisors is an integer number (273935241018).

Almost surely, 2^{2156135445066} is an apocalyptic number.

2156135445066 is an abundant number, since it is smaller than the sum of its proper divisors (2226828411222).

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

2156135445066 is a wasteful number, since it uses less digits than its factorization.

2156135445066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891080517.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 2156135445066 in words is "two trillion, one hundred fifty-six billion, one hundred thirty-five million, four hundred forty-five thousand, sixty-six".