216457864862 has 16 divisors (see below), whose sum is σ = 336917066112. Its totient is φ = 104223076440.

The previous prime is 216457864859. The next prime is 216457864871. The reversal of 216457864862 is 268468754612.

It is a congruent number.

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, 17718908 + ... + 17731119.

It is an arithmetic number, because the mean of its divisors is an integer number (21057316632).

Almost surely, 2^216457864862 is an apocalyptic number.

216457864862 is a deficient number, since it is larger than the sum of its proper divisors (120459201250).

216457864862 is a wasteful number, since it uses less digits than its factorization.

216457864862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35450143.

The product of its digits is 30965760, while the sum is 59.

The spelling of 216457864862 in words is "two hundred sixteen billion, four hundred fifty-seven million, eight hundred sixty-four thousand, eight hundred sixty-two".