521054414312240 has 40 divisors (see below), whose sum is σ = 1214883387317088. Its totient is φ = 207831335782400.

The previous prime is 521054414312221. The next prime is 521054414312281. The reversal of 521054414312240 is 42213414450125.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 521054414312194 and 521054414312203.

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, 9225439436 + ... + 9225495915.

Almost surely, 2^{521054414312240} is an apocalyptic number.

It is an amenable number.

521054414312240 is an abundant number, since it is smaller than the sum of its proper divisors (693828973004848).

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

521054414312240 is a wasteful number, since it uses less digits than its factorization.

521054414312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450935717 (or 18450935711 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 521054414312240 its reverse (42213414450125), we get a palindrome (563267828762365).

The spelling of 521054414312240 in words is "five hundred twenty-one trillion, fifty-four billion, four hundred fourteen million, three hundred twelve thousand, two hundred forty".