216464787464612 has 12 divisors (see below), whose sum is σ = 401096517949260. Its totient is φ = 101865782336256.

The previous prime is 216464787464567. The next prime is 216464787464633.

216464787464612 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 130158755133796 + 86306032330816 = 11408714^2 + 9290104^2 .

It is a Harshad number since it is a multiple of its sum of digits (68), and also a Moran number because the ratio is a prime number: 3183305698009 = 216464787464612 / (2 + 1 + 6 + 4 + 6 + 4 + 7 + 8 + 7 + 4 + 6 + 4 + 6 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1591652848937 + ... + 1591652849072.

It is an arithmetic number, because the mean of its divisors is an integer number (33424709829105).

Almost surely, 2^{216464787464612} is an apocalyptic number.

It is an amenable number.

216464787464612 is a deficient number, since it is larger than the sum of its proper divisors (184631730484648).

216464787464612 is a wasteful number, since it uses less digits than its factorization.

216464787464612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183305698030 (or 3183305698028 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 68.

The spelling of 216464787464612 in words is "two hundred sixteen trillion, four hundred sixty-four billion, seven hundred eighty-seven million, four hundred sixty-four thousand, six hundred twelve".