521853613532045 has 8 divisors (see below), whose sum is σ = 626230475161440. Its totient is φ = 417478798210320.

The previous prime is 521853613531981. The next prime is 521853613532089. The reversal of 521853613532045 is 540235316358125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521853613532045 - 2⁶ = 521853613531981 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511015811 + ... + 512036000.

It is an arithmetic number, because the mean of its divisors is an integer number (78278809395180).

Almost surely, 2^{521853613532045} is an apocalyptic number.

It is an amenable number.

521853613532045 is a deficient number, since it is larger than the sum of its proper divisors (104376861629395).

521853613532045 is a wasteful number, since it uses less digits than its factorization.

521853613532045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023153835.

The product of its (nonzero) digits is 12960000, while the sum is 53.

The spelling of 521853613532045 in words is "five hundred twenty-one trillion, eight hundred fifty-three billion, six hundred thirteen million, five hundred thirty-two thousand, forty-five".