523055011780 has 96 divisors (see below), whose sum is σ = 1289536641792. Its totient is φ = 174448857600.

The previous prime is 523055011769. The next prime is 523055011789. The reversal of 523055011780 is 87110550325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (523055011789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35118135 + ... + 35133025.

It is an arithmetic number, because the mean of its divisors is an integer number (13432673352).

Almost surely, 2^523055011780 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 523055011780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644768320896).

523055011780 is an abundant number, since it is smaller than the sum of its proper divisors (766481630012).

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

523055011780 is a wasteful number, since it uses less digits than its factorization.

523055011780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21725 (or 21723 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 523055011780 in words is "five hundred twenty-three billion, fifty-five million, eleven thousand, seven hundred eighty".