215036141030661 has 4 divisors (see below), whose sum is σ = 286714854707552. Its totient is φ = 143357427353772.

The previous prime is 215036141030567. The next prime is 215036141030671. The reversal of 215036141030661 is 166030141630512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 215036141030661 - 2¹⁰ = 215036141029637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215036141030671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35839356838441 + ... + 35839356838446.

It is an arithmetic number, because the mean of its divisors is an integer number (71678713676888).

Almost surely, 2^{215036141030661} is an apocalyptic number.

It is an amenable number.

215036141030661 is a deficient number, since it is larger than the sum of its proper divisors (71678713676891).

215036141030661 is an equidigital number, since it uses as much as digits as its factorization.

215036141030661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71678713676890.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 215036141030661 in words is "two hundred fifteen trillion, thirty-six billion, one hundred forty-one million, thirty thousand, six hundred sixty-one".