520297853520 has 40 divisors (see below), whose sum is σ = 1612923346656. Its totient is φ = 138746094208.

The previous prime is 520297853461. The next prime is 520297853521. The reversal of 520297853520 is 25358792025.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 520297853520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520297853521) 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, 1083953622 + ... + 1083954101.

Almost surely, 2^520297853520 is an apocalyptic number.

It is an amenable number.

520297853520 is an abundant number, since it is smaller than the sum of its proper divisors (1092625493136).

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

520297853520 is a wasteful number, since it uses less digits than its factorization.

520297853520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2167907739 (or 2167907733 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 520297853520 in words is "five hundred twenty billion, two hundred ninety-seven million, eight hundred fifty-three thousand, five hundred twenty".