215023665612494 has 8 divisors (see below), whose sum is σ = 341508174796368. Its totient is φ = 101187607347040.

The previous prime is 215023665612491. The next prime is 215023665612521. The reversal of 215023665612494 is 494216566320512.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215023665612491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3162112729562 + ... + 3162112729629.

It is an arithmetic number, because the mean of its divisors is an integer number (42688521849546).

Almost surely, 2^{215023665612494} is an apocalyptic number.

215023665612494 is a deficient number, since it is larger than the sum of its proper divisors (126484509183874).

215023665612494 is a wasteful number, since it uses less digits than its factorization.

215023665612494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324225459210.

The product of its (nonzero) digits is 18662400, while the sum is 56.

The spelling of 215023665612494 in words is "two hundred fifteen trillion, twenty-three billion, six hundred sixty-five million, six hundred twelve thousand, four hundred ninety-four".