521534775761130 has 128 divisors (see below), whose sum is σ = 1327497986592000. Its totient is φ = 130763967473664.

The previous prime is 521534775761119. The next prime is 521534775761213. The reversal of 521534775761130 is 31167577435125.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100488862 + ... + 105551318.

It is an arithmetic number, because the mean of its divisors is an integer number (10371078020250).

Almost surely, 2^{521534775761130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521534775761130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663748993296000).

521534775761130 is an abundant number, since it is smaller than the sum of its proper divisors (805963210830870).

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

521534775761130 is a wasteful number, since it uses less digits than its factorization.

521534775761130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063848.

The product of its (nonzero) digits is 18522000, while the sum is 57.

The spelling of 521534775761130 in words is "five hundred twenty-one trillion, five hundred thirty-four billion, seven hundred seventy-five million, seven hundred sixty-one thousand, one hundred thirty".