20596667220 has 288 divisors, whose sum is σ = 68723665920. Its totient is φ = 4970557440.

The previous prime is 20596667173. The next prime is 20596667227. The reversal of 20596667220 is 2276669502.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20596667227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16979334 + ... + 16980546.

It is an arithmetic number, because the mean of its divisors is an integer number (238623840).

Almost surely, 2^20596667220 is an apocalyptic number.

20596667220 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 20596667220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34361832960).

20596667220 is an abundant number, since it is smaller than the sum of its proper divisors (48126998700).

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

20596667220 is a wasteful number, since it uses less digits than its factorization.

20596667220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20596667220 in words is "twenty billion, five hundred ninety-six million, six hundred sixty-seven thousand, two hundred twenty".