2215861466 has 64 divisors (see below), whose sum is σ = 4257792000. Its totient is φ = 841530816.

The previous prime is 2215861451. The next prime is 2215861477. The reversal of 2215861466 is 6641685122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459335 + ... + 464133.

It is an arithmetic number, because the mean of its divisors is an integer number (66528000).

Almost surely, 2^2215861466 is an apocalyptic number.

2215861466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2215861466 is a deficient number, since it is larger than the sum of its proper divisors (2041930534).

2215861466 is a wasteful number, since it uses less digits than its factorization.

2215861466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923.

The product of its digits is 138240, while the sum is 41.

The square root of 2215861466 is about 47072.9377243443. The cubic root of 2215861466 is about 1303.7096146179.

The spelling of 2215861466 in words is "two billion, two hundred fifteen million, eight hundred sixty-one thousand, four hundred sixty-six".