20366166423 has 8 divisors (see below), whose sum is σ = 27667245168. Its totient is φ = 13321265984.

The previous prime is 20366166421. The next prime is 20366166433. The reversal of 20366166423 is 32466166302.

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 20366166423 - 2¹ = 20366166421 is a prime.

It is a super-2 number, since 2×20366166423² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20366166421) 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, 64044390 + ... + 64044707.

It is an arithmetic number, because the mean of its divisors is an integer number (3458405646).

Almost surely, 2^20366166423 is an apocalyptic number.

20366166423 is a deficient number, since it is larger than the sum of its proper divisors (7301078745).

20366166423 is a wasteful number, since it uses less digits than its factorization.

20366166423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128089153.

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 20366166423 in words is "twenty billion, three hundred sixty-six million, one hundred sixty-six thousand, four hundred twenty-three".