5136721920 has 480 divisors, whose sum is σ = 20121060960. Its totient is φ = 1243054080.

The previous prime is 5136721913. The next prime is 5136721939. The reversal of 5136721920 is 291276315.

It is a tau number, because it is divible by the number of its divisors (480).

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

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, 9123559 + ... + 9124121.

It is an arithmetic number, because the mean of its divisors is an integer number (41918877).

Almost surely, 2^5136721920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5136721920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10060530480).

5136721920 is an abundant number, since it is smaller than the sum of its proper divisors (14984339040).

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

5136721920 is a wasteful number, since it uses less digits than its factorization.

5136721920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 584 counting only the distinct ones).

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

The square root of 5136721920 is about 71670.9279973407. The cubic root of 5136721920 is about 1725.4220819696.

The spelling of 5136721920 in words is "five billion, one hundred thirty-six million, seven hundred twenty-one thousand, nine hundred twenty".