521041303152340 has 24 divisors (see below), whose sum is σ = 1094509410527232. Its totient is φ = 208355059564320.

The previous prime is 521041303152287. The next prime is 521041303152343. The reversal of 521041303152340 is 43251303140125.

It is a junction number, because it is equal to n+sod(n) for n = 521041303152296 and 521041303152305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521041303152343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3841286524 + ... + 3841422163.

It is an arithmetic number, because the mean of its divisors is an integer number (45604558771968).

Almost surely, 2^{521041303152340} is an apocalyptic number.

It is an amenable number.

521041303152340 is an abundant number, since it is smaller than the sum of its proper divisors (573468107374892).

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

521041303152340 is a wasteful number, since it uses less digits than its factorization.

521041303152340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682712087 (or 7682712085 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 521041303152340 its reverse (43251303140125), we get a palindrome (564292606292465).

The spelling of 521041303152340 in words is "five hundred twenty-one trillion, forty-one billion, three hundred three million, one hundred fifty-two thousand, three hundred forty".