216893190419428 has 48 divisors (see below), whose sum is σ = 400847753142144. Its totient is φ = 102550639368960.

The previous prime is 216893190419419. The next prime is 216893190419513. The reversal of 216893190419428 is 824914091398612.

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, 66358050 + ... + 69549817.

It is an arithmetic number, because the mean of its divisors is an integer number (8350994857128).

Almost surely, 2^{216893190419428} is an apocalyptic number.

It is an amenable number.

216893190419428 is a deficient number, since it is larger than the sum of its proper divisors (183954562722716).

216893190419428 is a wasteful number, since it uses less digits than its factorization.

216893190419428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135908212 (or 135908210 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 67.

The spelling of 216893190419428 in words is "two hundred sixteen trillion, eight hundred ninety-three billion, one hundred ninety million, four hundred nineteen thousand, four hundred twenty-eight".