2132561215 has 4 divisors (see below), whose sum is σ = 2559073464. Its totient is φ = 1706048968.

The previous prime is 2132561201. The next prime is 2132561231. The reversal of 2132561215 is 5121652312.

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

It is a cyclic number.

It is not a de Polignac number, because 2132561215 - 2⁷ = 2132561087 is a prime.

It is a Duffinian number.

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, 213256117 + ... + 213256126.

It is an arithmetic number, because the mean of its divisors is an integer number (639768366).

Almost surely, 2^2132561215 is an apocalyptic number.

2132561215 is a deficient number, since it is larger than the sum of its proper divisors (426512249).

2132561215 is an equidigital number, since it uses as much as digits as its factorization.

2132561215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426512248.

The product of its digits is 3600, while the sum is 28.

The square root of 2132561215 is about 46179.6623525985. The cubic root of 2132561215 is about 1287.1638540556.

The spelling of 2132561215 in words is "two billion, one hundred thirty-two million, five hundred sixty-one thousand, two hundred fifteen".