2156128076133 has 48 divisors (see below), whose sum is σ = 3133944328320. Its totient is φ = 1428441244800.

The previous prime is 2156128076131. The next prime is 2156128076143. The reversal of 2156128076133 is 3316708216512.

It is a happy number.

2156128076133 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 1 + 28 + 0 + 7 + 613 + 3 = 666.

It is not a de Polignac number, because 2156128076133 - 2¹ = 2156128076131 is a prime.

It is a super-3 number, since 3×2156128076133³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156128076131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2032165423 + ... + 2032166483.

It is an arithmetic number, because the mean of its divisors is an integer number (65290506840).

Almost surely, 2^{2156128076133} is an apocalyptic number.

It is an amenable number.

2156128076133 is a deficient number, since it is larger than the sum of its proper divisors (977816252187).

2156128076133 is a wasteful number, since it uses less digits than its factorization.

2156128076133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 2156128076133 in words is "two trillion, one hundred fifty-six billion, one hundred twenty-eight million, seventy-six thousand, one hundred thirty-three".