20167045680 has 80 divisors (see below), whose sum is σ = 63124888320. Its totient is φ = 5325659904.

The previous prime is 20167045669. The next prime is 20167045711. The reversal of 20167045680 is 8654076102.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383190 + ... + 432629.

It is an arithmetic number, because the mean of its divisors is an integer number (789061104).

Almost surely, 2^20167045680 is an apocalyptic number.

20167045680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20167045680 is an abundant number, since it is smaller than the sum of its proper divisors (42957842640).

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

20167045680 is a wasteful number, since it uses less digits than its factorization.

20167045680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815938 (or 815932 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 20167045680 in words is "twenty billion, one hundred sixty-seven million, forty-five thousand, six hundred eighty".