2102542033553 has 4 divisors (see below), whose sum is σ = 2264276036148. Its totient is φ = 1940808030960.

The previous prime is 2102542033547. The next prime is 2102542033573. The reversal of 2102542033553 is 3553302452012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 202795307584 + 1899746725969 = 450328^2 + 1378313^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102542033553 - 2⁸ = 2102542033297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102542033573) 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, 80867001278 + ... + 80867001303.

It is an arithmetic number, because the mean of its divisors is an integer number (566069009037).

Almost surely, 2^{2102542033553} is an apocalyptic number.

It is an amenable number.

2102542033553 is a deficient number, since it is larger than the sum of its proper divisors (161734002595).

2102542033553 is a wasteful number, since it uses less digits than its factorization.

2102542033553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161734002594.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 2102542033553 its reverse (3553302452012), we get a palindrome (5655844485565).

The spelling of 2102542033553 in words is "two trillion, one hundred two billion, five hundred forty-two million, thirty-three thousand, five hundred fifty-three".