20166668520037 has 8 divisors (see below), whose sum is σ = 21721481600000. Its totient is φ = 18612359852400.

The previous prime is 20166668520001. The next prime is 20166668520049. The reversal of 20166668520037 is 73002586666102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20166668520037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166668520067) 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, 126020037 + ... + 126179962.

It is an arithmetic number, because the mean of its divisors is an integer number (2715185200000).

Almost surely, 2^{20166668520037} is an apocalyptic number.

It is an amenable number.

20166668520037 is a deficient number, since it is larger than the sum of its proper divisors (1554813079963).

20166668520037 is a wasteful number, since it uses less digits than its factorization.

20166668520037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252206163.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 20166668520037 in words is "twenty trillion, one hundred sixty-six billion, six hundred sixty-eight million, five hundred twenty thousand, thirty-seven".