20067217180 has 24 divisors (see below), whose sum is σ = 44620048368. Its totient is φ = 7554716928.

The previous prime is 20067217171. The next prime is 20067217193. The reversal of 20067217180 is 8171276002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29510274 + ... + 29510953.

It is an arithmetic number, because the mean of its divisors is an integer number (1859168682).

Almost surely, 2^20067217180 is an apocalyptic number.

20067217180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20067217180 is an abundant number, since it is smaller than the sum of its proper divisors (24552831188).

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

20067217180 is a wasteful number, since it uses less digits than its factorization.

20067217180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59021253 (or 59021251 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 20067217180 in words is "twenty billion, sixty-seven million, two hundred seventeen thousand, one hundred eighty".