6502600020 has 192 divisors, whose sum is σ = 21768155136. Its totient is φ = 1418081280.

The previous prime is 6502600019. The next prime is 6502600037. The reversal of 6502600020 is 200062056.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 6502600020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5959675 + ... + 5960765.

It is an arithmetic number, because the mean of its divisors is an integer number (113375808).

Almost surely, 2^6502600020 is an apocalyptic number.

6502600020 is a gapful number since it is divisible by the number (60) 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 6502600020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10884077568).

6502600020 is an abundant number, since it is smaller than the sum of its proper divisors (15265555116).

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

6502600020 is a wasteful number, since it uses less digits than its factorization.

6502600020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 6502600020 is about 80638.7005103629. The cubic root of 6502600020 is about 1866.5043812288.

Adding to 6502600020 its reverse (200062056), we get a palindrome (6702662076).

The spelling of 6502600020 in words is "six billion, five hundred two million, six hundred thousand, twenty".