216148715 has 4 divisors (see below), whose sum is σ = 259378464. Its totient is φ = 172918968.

The previous prime is 216148663. The next prime is 216148717. The reversal of 216148715 is 517841612.

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 216148715 - 2¹² = 216144619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216148717) 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, 21614867 + ... + 21614876.

It is an arithmetic number, because the mean of its divisors is an integer number (64844616).

Almost surely, 2^216148715 is an apocalyptic number.

216148715 is a deficient number, since it is larger than the sum of its proper divisors (43229749).

216148715 is an equidigital number, since it uses as much as digits as its factorization.

216148715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43229748.

The product of its digits is 13440, while the sum is 35.

The square root of 216148715 is about 14701.9969732006. The cubic root of 216148715 is about 600.1376674844.

The spelling of 216148715 in words is "two hundred sixteen million, one hundred forty-eight thousand, seven hundred fifteen".