11580215970 has 64 divisors (see below), whose sum is σ = 28650516480. Its totient is φ = 2993349888.

The previous prime is 11580215957. The next prime is 11580215987. The reversal of 11580215970 is 7951208511.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279199 + ... + 317981.

It is an arithmetic number, because the mean of its divisors is an integer number (447664320).

Almost surely, 2^11580215970 is an apocalyptic number.

11580215970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11580215970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14325258240).

11580215970 is an abundant number, since it is smaller than the sum of its proper divisors (17070300510).

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

11580215970 is a wasteful number, since it uses less digits than its factorization.

11580215970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39099.

The product of its (nonzero) digits is 25200, while the sum is 39.

The spelling of 11580215970 in words is "eleven billion, five hundred eighty million, two hundred fifteen thousand, nine hundred seventy".