20018666833370 has 8 divisors (see below), whose sum is σ = 36033600300084. Its totient is φ = 8007466733344.

The previous prime is 20018666833337. The next prime is 20018666833423. The reversal of 20018666833370 is 7333866681002.

It can be written as a sum of positive squares in 2 ways, for example, as 17607817491889 + 2410849341481 = 4196167^2 + 1552691^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000933341659 + ... + 1000933341678.

Almost surely, 2^{20018666833370} is an apocalyptic number.

20018666833370 is a deficient number, since it is larger than the sum of its proper divisors (16014933466714).

20018666833370 is a wasteful number, since it uses less digits than its factorization.

20018666833370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001866683344.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 20018666833370 in words is "twenty trillion, eighteen billion, six hundred sixty-six million, eight hundred thirty-three thousand, three hundred seventy".