216531370743473 has 8 divisors (see below), whose sum is σ = 228052787654400. Its totient is φ = 205022456730288.

The previous prime is 216531370743469. The next prime is 216531370743599. The reversal of 216531370743473 is 374347073135612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216531370743473 - 2² = 216531370743469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216531370743173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3125688878 + ... + 3125758151.

It is an arithmetic number, because the mean of its divisors is an integer number (28506598456800).

Almost surely, 2^{216531370743473} is an apocalyptic number.

It is an amenable number.

216531370743473 is a deficient number, since it is larger than the sum of its proper divisors (11521416910927).

216531370743473 is a wasteful number, since it uses less digits than its factorization.

216531370743473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251448871.

The product of its (nonzero) digits is 26671680, while the sum is 56.

The spelling of 216531370743473 in words is "two hundred sixteen trillion, five hundred thirty-one billion, three hundred seventy million, seven hundred forty-three thousand, four hundred seventy-three".