523891185680 has 20 divisors (see below), whose sum is σ = 1218047006892. Its totient is φ = 209556474240.

The previous prime is 523891185659. The next prime is 523891185683. The reversal of 523891185680 is 86581198325.

It can be written as a sum of positive squares in 2 ways, for example, as 378983059456 + 144908126224 = 615616^2 + 380668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (523891185683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3274319831 + ... + 3274319990.

Almost surely, 2^523891185680 is an apocalyptic number.

It is an amenable number.

523891185680 is an abundant number, since it is smaller than the sum of its proper divisors (694155821212).

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

523891185680 is a wasteful number, since it uses less digits than its factorization.

523891185680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548639834 (or 6548639828 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 523891185680 in words is "five hundred twenty-three billion, eight hundred ninety-one million, one hundred eighty-five thousand, six hundred eighty".