2136515345 has 4 divisors (see below), whose sum is σ = 2563818420. Its totient is φ = 1709212272.

The previous prime is 2136515323. The next prime is 2136515351. The reversal of 2136515345 is 5435156312.

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 1189353169 + 947162176 = 34487^2 + 30776^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136515345 - 2¹⁴ = 2136498961 is a prime.

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, 213651530 + ... + 213651539.

It is an arithmetic number, because the mean of its divisors is an integer number (640954605).

Almost surely, 2^2136515345 is an apocalyptic number.

It is an amenable number.

2136515345 is a deficient number, since it is larger than the sum of its proper divisors (427303075).

2136515345 is an equidigital number, since it uses as much as digits as its factorization.

2136515345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427303074.

The product of its digits is 54000, while the sum is 35.

The square root of 2136515345 is about 46222.4549867270. The cubic root of 2136515345 is about 1287.9589028671.

The spelling of 2136515345 in words is "two billion, one hundred thirty-six million, five hundred fifteen thousand, three hundred forty-five".