14166645520 has 20 divisors (see below), whose sum is σ = 32937451020. Its totient is φ = 5666658176.

The previous prime is 14166645503. The next prime is 14166645541. The reversal of 14166645520 is 2554666141.

It can be written as a sum of positive squares in 2 ways, for example, as 1644140304 + 12522505216 = 40548^2 + 111904^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88541455 + ... + 88541614.

It is an arithmetic number, because the mean of its divisors is an integer number (1646872551).

Almost surely, 2^14166645520 is an apocalyptic number.

14166645520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14166645520 is an abundant number, since it is smaller than the sum of its proper divisors (18770805500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14166645520 is a wasteful number, since it uses less digits than its factorization.

14166645520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177083082 (or 177083076 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 14166645520 in words is "fourteen billion, one hundred sixty-six million, six hundred forty-five thousand, five hundred twenty".