6513179220 has 120 divisors (see below), whose sum is σ = 20511114624. Its totient is φ = 1730130624.

The previous prime is 6513179203. The next prime is 6513179263. The reversal of 6513179220 is 229713156.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 418417 + ... + 433703.

Almost surely, 2^6513179220 is an apocalyptic number.

6513179220 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 6513179220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10255557312).

6513179220 is an abundant number, since it is smaller than the sum of its proper divisors (13997935404).

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

6513179220 is a wasteful number, since it uses less digits than its factorization.

6513179220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15571 (or 15560 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 6513179220 is about 80704.2701472481. The cubic root of 6513179220 is about 1867.5160496032.

The spelling of 6513179220 in words is "six billion, five hundred thirteen million, one hundred seventy-nine thousand, two hundred twenty".