216531370743474 has 32 divisors (see below), whose sum is σ = 433243214659584. Its totient is φ = 72147046443920.

The previous prime is 216531370743469. The next prime is 216531370743599. The reversal of 216531370743474 is 474347073135612.

It is a super-2 number, since 2×216531370743474² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550489357 + ... + 550882559.

It is an arithmetic number, because the mean of its divisors is an integer number (13538850458112).

Almost surely, 2^{216531370743474} is an apocalyptic number.

216531370743474 is an abundant number, since it is smaller than the sum of its proper divisors (216711843916110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216531370743474 is a wasteful number, since it uses less digits than its factorization.

216531370743474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431222.

The product of its (nonzero) digits is 35562240, while the sum is 57.

The spelling of 216531370743474 in words is "two hundred sixteen trillion, five hundred thirty-one billion, three hundred seventy million, seven hundred forty-three thousand, four hundred seventy-four".