521860061364140 has 48 divisors (see below), whose sum is σ = 1107217101688992. Its totient is φ = 206589603956736.

The previous prime is 521860061364067. The next prime is 521860061364151. The reversal of 521860061364140 is 41463160068125.

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, 168805982 + ... + 171869658.

It is an arithmetic number, because the mean of its divisors is an integer number (23067022951854).

Almost surely, 2^{521860061364140} is an apocalyptic number.

It is an amenable number.

521860061364140 is an abundant number, since it is smaller than the sum of its proper divisors (585357040324852).

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

521860061364140 is a wasteful number, since it uses less digits than its factorization.

521860061364140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151586 (or 3151584 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 521860061364140 in words is "five hundred twenty-one trillion, eight hundred sixty billion, sixty-one million, three hundred sixty-four thousand, one hundred forty".