6791515520 has 128 divisors (see below), whose sum is σ = 16908605280. Its totient is φ = 2606284800.

The previous prime is 6791515519. The next prime is 6791515541. The reversal of 6791515520 is 255151976.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×6791515520² = 92249366116801740800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1598519 + ... + 1602761.

Almost surely, 2^6791515520 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 6791515520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8454302640).

6791515520 is an abundant number, since it is smaller than the sum of its proper divisors (10117089760).

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

6791515520 is a wasteful number, since it uses less digits than its factorization.

6791515520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364 (or 4352 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 41.

The square root of 6791515520 is about 82410.6517387164. The cubic root of 6791515520 is about 1893.7481975679.

The spelling of 6791515520 in words is "six billion, seven hundred ninety-one million, five hundred fifteen thousand, five hundred twenty".