216136513231611 has 8 divisors (see below), whose sum is σ = 329350877305344. Its totient is φ = 123506578989480.

The previous prime is 216136513231589. The next prime is 216136513231631. The reversal of 216136513231611 is 116132315631612.

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

It is not a de Polignac number, because 216136513231611 - 2¹⁸ = 216136512969467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216136513231631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5146107457875 + ... + 5146107457916.

It is an arithmetic number, because the mean of its divisors is an integer number (41168859663168).

Almost surely, 2^{216136513231611} is an apocalyptic number.

216136513231611 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

216136513231611 is a deficient number, since it is larger than the sum of its proper divisors (113214364073733).

216136513231611 is a wasteful number, since it uses less digits than its factorization.

216136513231611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292214915801.

The product of its digits is 116640, while the sum is 42.

The spelling of 216136513231611 in words is "two hundred sixteen trillion, one hundred thirty-six billion, five hundred thirteen million, two hundred thirty-one thousand, six hundred eleven".