216920486093 has 4 divisors (see below), whose sum is σ = 217087735260. Its totient is φ = 216753236928.

The previous prime is 216920486051. The next prime is 216920486113. The reversal of 216920486093 is 390684029612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 140383603684 + 76536882409 = 374678^2 + 276653^2 .

It is a cyclic number.

It is not a de Polignac number, because 216920486093 - 2³⁴ = 199740616909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216920486033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83622638 + ... + 83625231.

It is an arithmetic number, because the mean of its divisors is an integer number (54271933815).

Almost surely, 2^216920486093 is an apocalyptic number.

It is an amenable number.

216920486093 is a deficient number, since it is larger than the sum of its proper divisors (167249167).

216920486093 is a wasteful number, since it uses less digits than its factorization.

216920486093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167249166.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 216920486093 in words is "two hundred sixteen billion, nine hundred twenty million, four hundred eighty-six thousand, ninety-three".