521854146312036 has 48 divisors (see below), whose sum is σ = 1259650487222400. Its totient is φ = 167952718870272.

The previous prime is 521854146311999. The next prime is 521854146312077. The reversal of 521854146312036 is 630213641458125.

It is a self number, because there is not a number n which added to its sum of digits gives 521854146312036.

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, 215220105 + ... + 217631343.

It is an arithmetic number, because the mean of its divisors is an integer number (26242718483800).

Almost surely, 2^{521854146312036} is an apocalyptic number.

It is an amenable number.

521854146312036 is an abundant number, since it is smaller than the sum of its proper divisors (737796340910364).

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

521854146312036 is a wasteful number, since it uses less digits than its factorization.

521854146312036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033188 (or 3033186 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 521854146312036 in words is "five hundred twenty-one trillion, eight hundred fifty-four billion, one hundred forty-six million, three hundred twelve thousand, thirty-six".