11701980528 has 320 divisors, whose sum is σ = 37780439040. Its totient is φ = 3046450176.

The previous prime is 11701980497. The next prime is 11701980541. The reversal of 11701980528 is 82508910711.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 11701980528.

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, 25274025 + ... + 25274487.

It is an arithmetic number, because the mean of its divisors is an integer number (118063872).

Almost surely, 2^11701980528 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 11701980528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18890219520).

11701980528 is an abundant number, since it is smaller than the sum of its proper divisors (26078458512).

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

11701980528 is a wasteful number, since it uses less digits than its factorization.

11701980528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The spelling of 11701980528 in words is "eleven billion, seven hundred one million, nine hundred eighty thousand, five hundred twenty-eight".