216143661415 has 32 divisors (see below), whose sum is σ = 284211555840. Its totient is φ = 156496348800.

The previous prime is 216143661413. The next prime is 216143661457. The reversal of 216143661415 is 514166341612.

It is not a de Polignac number, because 216143661415 - 2¹ = 216143661413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216143661413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23771020 + ... + 23780110.

It is an arithmetic number, because the mean of its divisors is an integer number (8881611120).

Almost surely, 2^216143661415 is an apocalyptic number.

216143661415 is a deficient number, since it is larger than the sum of its proper divisors (68067894425).

216143661415 is a wasteful number, since it uses less digits than its factorization.

216143661415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10983.

The product of its digits is 103680, while the sum is 40.

The spelling of 216143661415 in words is "two hundred sixteen billion, one hundred forty-three million, six hundred sixty-one thousand, four hundred fifteen".