2116506532553 has 4 divisors (see below), whose sum is σ = 2418864608640. Its totient is φ = 1814148456468.

The previous prime is 2116506532541. The next prime is 2116506532571. The reversal of 2116506532553 is 3552356056112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2116506532553 - 2¹⁶ = 2116506467017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116506532253) 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, 151179038033 + ... + 151179038046.

It is an arithmetic number, because the mean of its divisors is an integer number (604716152160).

Almost surely, 2^{2116506532553} is an apocalyptic number.

It is an amenable number.

2116506532553 is a deficient number, since it is larger than the sum of its proper divisors (302358076087).

2116506532553 is an equidigital number, since it uses as much as digits as its factorization.

2116506532553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302358076086.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 2116506532553 in words is "two trillion, one hundred sixteen billion, five hundred six million, five hundred thirty-two thousand, five hundred fifty-three".