2134161521 has 8 divisors (see below), whose sum is σ = 2260284264. Its totient is φ = 2008103680.

The previous prime is 2134161503. The next prime is 2134161539. The reversal of 2134161521 is 1251614312.

It is an interprime number because it is at equal distance from previous prime (2134161503) and next prime (2134161539).

It can be written as a sum of positive squares in 4 ways, for example, as 1302415921 + 831745600 = 36089^2 + 28840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2134161521 - 2⁶ = 2134161457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134160521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62411 + ... + 90351.

It is an arithmetic number, because the mean of its divisors is an integer number (282535533).

Almost surely, 2^2134161521 is an apocalyptic number.

It is an amenable number.

2134161521 is a deficient number, since it is larger than the sum of its proper divisors (126122743).

2134161521 is a wasteful number, since it uses less digits than its factorization.

2134161521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32451.

The product of its digits is 1440, while the sum is 26.

The square root of 2134161521 is about 46196.9860596987. The cubic root of 2134161521 is about 1287.4857425888.

Adding to 2134161521 its reverse (1251614312), we get a palindrome (3385775833).

The spelling of 2134161521 in words is "two billion, one hundred thirty-four million, one hundred sixty-one thousand, five hundred twenty-one".