20603202620 has 192 divisors, whose sum is σ = 59048220672. Its totient is φ = 5830272000.

The previous prime is 20603202619. The next prime is 20603202643. The reversal of 20603202620 is 2620230602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1212785 + ... + 1229655.

It is an arithmetic number, because the mean of its divisors is an integer number (307542816).

Almost surely, 2^20603202620 is an apocalyptic number.

20603202620 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 20603202620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29524110336).

20603202620 is an abundant number, since it is smaller than the sum of its proper divisors (38445018052).

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

20603202620 is a wasteful number, since it uses less digits than its factorization.

20603202620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16972 (or 16970 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The spelling of 20603202620 in words is "twenty billion, six hundred three million, two hundred two thousand, six hundred twenty".