2153802820511 has 4 divisors (see below), whose sum is σ = 2153806788000. Its totient is φ = 2153798853024.

The previous prime is 2153802820471. The next prime is 2153802820573. The reversal of 2153802820511 is 1150282083512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153802820511 is a prime.

It is a super-2 number, since 2×2153802820511² (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 (2153802823511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010186 + ... + 2308263.

It is an arithmetic number, because the mean of its divisors is an integer number (538451697000).

Almost surely, 2^{2153802820511} is an apocalyptic number.

2153802820511 is a deficient number, since it is larger than the sum of its proper divisors (3967489).

2153802820511 is an equidigital number, since it uses as much as digits as its factorization.

2153802820511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967488.

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 2153802820511 in words is "two trillion, one hundred fifty-three billion, eight hundred two million, eight hundred twenty thousand, five hundred eleven".