2153798071191 has 64 divisors (see below), whose sum is σ = 3564340595200. Its totient is φ = 1276855840512.

The previous prime is 2153798071169. The next prime is 2153798071301. The reversal of 2153798071191 is 1911708973512.

2153798071191 is a `hidden beast` number, since 2 + 1 + 5 + 379 + 80 + 7 + 1 + 191 = 666.

It is not a de Polignac number, because 2153798071191 - 2¹⁹ = 2153797546903 is a prime.

It is a super-2 number, since 2×2153798071191² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153798071121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124380 + ... + 2079198.

It is an arithmetic number, because the mean of its divisors is an integer number (55692821800).

Almost surely, 2^{2153798071191} is an apocalyptic number.

2153798071191 is a deficient number, since it is larger than the sum of its proper divisors (1410542524009).

2153798071191 is a wasteful number, since it uses less digits than its factorization.

2153798071191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954957 (or 1954951 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 54.

The spelling of 2153798071191 in words is "two trillion, one hundred fifty-three billion, seven hundred ninety-eight million, seventy-one thousand, one hundred ninety-one".