20145980760 has 128 divisors (see below), whose sum is σ = 61662574080. Its totient is φ = 5264252928.

The previous prime is 20145980753. The next prime is 20145980837. The reversal of 20145980760 is 6708954102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1545229 + ... + 1558211.

It is an arithmetic number, because the mean of its divisors is an integer number (481738860).

Almost surely, 2^20145980760 is an apocalyptic number.

20145980760 is a gapful number since it is divisible by the number (20) 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 20145980760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30831287040).

20145980760 is an abundant number, since it is smaller than the sum of its proper divisors (41516593320).

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

20145980760 is a wasteful number, since it uses less digits than its factorization.

20145980760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13257 (or 13253 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20145980760 in words is "twenty billion, one hundred forty-five million, nine hundred eighty thousand, seven hundred sixty".