20166668351852 has 24 divisors (see below), whose sum is σ = 38500125869520. Its totient is φ = 9166638229760.

The previous prime is 20166668351849. The next prime is 20166668351857. The reversal of 20166668351852 is 25815386666102.

It is a junction number, because it is equal to n+sod(n) for n = 20166668351791 and 20166668351800.

It is not an unprimeable number, because it can be changed into a prime (20166668351857) 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, 19597928 + ... + 20601264.

It is an arithmetic number, because the mean of its divisors is an integer number (1604171911230).

Almost surely, 2^{20166668351852} is an apocalyptic number.

20166668351852 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20166668351852 is a deficient number, since it is larger than the sum of its proper divisors (18333457517668).

20166668351852 is a wasteful number, since it uses less digits than its factorization.

20166668351852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460161 (or 1460159 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 20166668351852 in words is "twenty trillion, one hundred sixty-six billion, six hundred sixty-eight million, three hundred fifty-one thousand, eight hundred fifty-two".