20166015144 has 128 divisors (see below), whose sum is σ = 56298240000. Its totient is φ = 5967075840.

The previous prime is 20166015139. The next prime is 20166015173. The reversal of 20166015144 is 44151066102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6189964 + ... + 6193220.

It is an arithmetic number, because the mean of its divisors is an integer number (439830000).

Almost surely, 2^20166015144 is an apocalyptic number.

20166015144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20166015144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28149120000).

20166015144 is an abundant number, since it is smaller than the sum of its proper divisors (36132224856).

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

20166015144 is a wasteful number, since it uses less digits than its factorization.

20166015144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20166015144 in words is "twenty billion, one hundred sixty-six million, fifteen thousand, one hundred forty-four".