216611330542 has 16 divisors (see below), whose sum is σ = 325686870432. Its totient is φ = 108049127040.

The previous prime is 216611330521. The next prime is 216611330543. The reversal of 216611330542 is 245033116612.

It is a junction number, because it is equal to n+sod(n) for n = 216611330498 and 216611330507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216611330543) 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, 5942023 + ... + 5978365.

It is an arithmetic number, because the mean of its divisors is an integer number (20355429402).

Almost surely, 2^216611330542 is an apocalyptic number.

216611330542 is a deficient number, since it is larger than the sum of its proper divisors (109075539890).

216611330542 is a wasteful number, since it uses less digits than its factorization.

216611330542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43323.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 216611330542 in words is "two hundred sixteen billion, six hundred eleven million, three hundred thirty thousand, five hundred forty-two".