215146356199 has 4 divisors (see below), whose sum is σ = 218176586640. Its totient is φ = 212116125760.

The previous prime is 215146356193. The next prime is 215146356203. The reversal of 215146356199 is 991653641512.

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 215146356199 - 2⁷ = 215146356071 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 (215146356193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515115114 + ... + 1515115255.

It is an arithmetic number, because the mean of its divisors is an integer number (54544146660).

Almost surely, 2^215146356199 is an apocalyptic number.

215146356199 is a deficient number, since it is larger than the sum of its proper divisors (3030230441).

215146356199 is an equidigital number, since it uses as much as digits as its factorization.

215146356199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030230440.

The product of its digits is 1749600, while the sum is 52.

The spelling of 215146356199 in words is "two hundred fifteen billion, one hundred forty-six million, three hundred fifty-six thousand, one hundred ninety-nine".