216261344974 has 16 divisors (see below), whose sum is σ = 324809444016. Its totient is φ = 107991576000.

The previous prime is 216261344903. The next prime is 216261344993. The reversal of 216261344974 is 479443162612.

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, 17954394 + ... + 17966434.

It is an arithmetic number, because the mean of its divisors is an integer number (20300590251).

Almost surely, 2^216261344974 is an apocalyptic number.

216261344974 is a deficient number, since it is larger than the sum of its proper divisors (108548099042).

216261344974 is a wasteful number, since it uses less digits than its factorization.

216261344974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22851.

The product of its digits is 1741824, while the sum is 49.

The spelling of 216261344974 in words is "two hundred sixteen billion, two hundred sixty-one million, three hundred forty-four thousand, nine hundred seventy-four".