20166407369 has 16 divisors (see below), whose sum is σ = 21939445008. Its totient is φ = 18459021312.

The previous prime is 20166407347. The next prime is 20166407377. The reversal of 20166407369 is 96370466102.

It can be written as a sum of positive squares in 8 ways, for example, as 6982774969 + 13183632400 = 83563^2 + 114820^2 .

It is a cyclic number.

It is not a de Polignac number, because 20166407369 - 2¹² = 20166403273 is a prime.

It is a super-2 number, since 2×20166407369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20166407309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1776299 + ... + 1787615.

It is an arithmetic number, because the mean of its divisors is an integer number (1371215313).

Almost surely, 2^20166407369 is an apocalyptic number.

It is an amenable number.

20166407369 is a deficient number, since it is larger than the sum of its proper divisors (1773037639).

20166407369 is a wasteful number, since it uses less digits than its factorization.

20166407369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14204.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 20166407369 in words is "twenty billion, one hundred sixty-six million, four hundred seven thousand, three hundred sixty-nine".