2152969536845 has 4 divisors (see below), whose sum is σ = 2583563444220. Its totient is φ = 1722375629472.

The previous prime is 2152969536803. The next prime is 2152969536859. The reversal of 2152969536845 is 5486359692512.

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 369660352009 + 1783309184836 = 607997^2 + 1335406^2 .

It is a cyclic number.

It is not a de Polignac number, because 2152969536845 - 2³⁸ = 1878091629901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215296953680 + ... + 215296953689.

It is an arithmetic number, because the mean of its divisors is an integer number (645890861055).

Almost surely, 2^{2152969536845} is an apocalyptic number.

It is an amenable number.

2152969536845 is a deficient number, since it is larger than the sum of its proper divisors (430593907375).

2152969536845 is an equidigital number, since it uses as much as digits as its factorization.

2152969536845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430593907374.

The product of its digits is 139968000, while the sum is 65.

The spelling of 2152969536845 in words is "two trillion, one hundred fifty-two billion, nine hundred sixty-nine million, five hundred thirty-six thousand, eight hundred forty-five".