2152665361 has 16 divisors (see below), whose sum is σ = 2685616128. Its totient is φ = 1676293200.

The previous prime is 2152665337. The next prime is 2152665371. The reversal of 2152665361 is 1635662512.

It is a cyclic number.

It is not a de Polignac number, because 2152665361 - 2⁵ = 2152665329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152665361.

It is not an unprimeable number, because it can be changed into a prime (2152665301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119646 + ... + 136456.

It is an arithmetic number, because the mean of its divisors is an integer number (167851008).

Almost surely, 2^2152665361 is an apocalyptic number.

It is an amenable number.

2152665361 is a deficient number, since it is larger than the sum of its proper divisors (532950767).

2152665361 is a wasteful number, since it uses less digits than its factorization.

2152665361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18492.

The product of its digits is 64800, while the sum is 37.

The square root of 2152665361 is about 46396.8249021417. The cubic root of 2152665361 is about 1291.1960065538.

The spelling of 2152665361 in words is "two billion, one hundred fifty-two million, six hundred sixty-five thousand, three hundred sixty-one".