20272206780 has 144 divisors (see below), whose sum is σ = 70899401664. Its totient is φ = 4592609280.

The previous prime is 20272206749. The next prime is 20272206781. The reversal of 20272206780 is 8760227202.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272206781) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 71190 + ... + 213570.

It is an arithmetic number, because the mean of its divisors is an integer number (492356956).

Almost surely, 2^20272206780 is an apocalyptic number.

20272206780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is a pronic number, being equal to 142380×142381.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20272206780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35449700832).

20272206780 is an abundant number, since it is smaller than the sum of its proper divisors (50627194884).

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

20272206780 is a wasteful number, since it uses less digits than its factorization.

20272206780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142516 (or 142511 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 20272206780 in words is "twenty billion, two hundred seventy-two million, two hundred six thousand, seven hundred eighty".