20166960464 has 160 divisors (see below), whose sum is σ = 50274639360. Its totient is φ = 7633207296.

The previous prime is 20166960461. The next prime is 20166960479. The reversal of 20166960464 is 46406966102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166960461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2316632 + ... + 2325320.

It is an arithmetic number, because the mean of its divisors is an integer number (314216496).

Almost surely, 2^20166960464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20166960464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25137319680).

20166960464 is an abundant number, since it is smaller than the sum of its proper divisors (30107678896).

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

20166960464 is a wasteful number, since it uses less digits than its factorization.

20166960464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8797 (or 8791 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20166960464 in words is "twenty billion, one hundred sixty-six million, nine hundred sixty thousand, four hundred sixty-four".