216834245412 has 24 divisors (see below), whose sum is σ = 518286734112. Its totient is φ = 70515201600.

The previous prime is 216834245399. The next prime is 216834245429. The reversal of 216834245412 is 214542438612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220359514 + ... + 220360497.

It is an arithmetic number, because the mean of its divisors is an integer number (21595280588).

Almost surely, 2^216834245412 is an apocalyptic number.

It is an amenable number.

216834245412 is an abundant number, since it is smaller than the sum of its proper divisors (301452488700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216834245412 is a wasteful number, since it uses less digits than its factorization.

216834245412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440720059 (or 440720057 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The spelling of 216834245412 in words is "two hundred sixteen billion, eight hundred thirty-four million, two hundred forty-five thousand, four hundred twelve".