20166868370 has 32 divisors (see below), whose sum is σ = 39606442560. Its totient is φ = 7332287040.

The previous prime is 20166868363. The next prime is 20166868459. The reversal of 20166868370 is 7386866102.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141061 + ... + 1158599.

It is an arithmetic number, because the mean of its divisors is an integer number (1237701330).

Almost surely, 2^20166868370 is an apocalyptic number.

20166868370 is a deficient number, since it is larger than the sum of its proper divisors (19439574190).

20166868370 is a wasteful number, since it uses less digits than its factorization.

20166868370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28010.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 20166868370 in words is "twenty billion, one hundred sixty-six million, eight hundred sixty-eight thousand, three hundred seventy".