20312182080 has 560 divisors, whose sum is σ = 79025227776. Its totient is φ = 4930191360.

The previous prime is 20312182019. The next prime is 20312182087. The reversal of 20312182080 is 8028121302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312182087) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13659097 + ... + 13660583.

Almost surely, 2^20312182080 is an apocalyptic number.

20312182080 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 20312182080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39512613888).

20312182080 is an abundant number, since it is smaller than the sum of its proper divisors (58713045696).

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

20312182080 is a wasteful number, since it uses less digits than its factorization.

20312182080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 20312182080 in words is "twenty billion, three hundred twelve million, one hundred eighty-two thousand, eighty".