20166768319 has 8 divisors (see below), whose sum is σ = 20651083200. Its totient is φ = 19684754976.

The previous prime is 20166768317. The next prime is 20166768337. The reversal of 20166768319 is 91386766102.

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 20166768319 - 2¹ = 20166768317 is a prime.

It is a super-2 number, since 2×20166768319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166768317) 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, 557644 + ... + 592705.

It is an arithmetic number, because the mean of its divisors is an integer number (2581385400).

Almost surely, 2^20166768319 is an apocalyptic number.

20166768319 is a deficient number, since it is larger than the sum of its proper divisors (484314881).

20166768319 is a wasteful number, since it uses less digits than its factorization.

20166768319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150769.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 20166768319 in words is "twenty billion, one hundred sixty-six million, seven hundred sixty-eight thousand, three hundred nineteen".