520945698402 has 128 divisors (see below), whose sum is σ = 1228895608320. Its totient is φ = 163248307200.

The previous prime is 520945698401. The next prime is 520945698541. The reversal of 520945698402 is 204896549025.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (520945698401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17170398 + ... + 17200710.

It is an arithmetic number, because the mean of its divisors is an integer number (9600746940).

Almost surely, 2^520945698402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520945698402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614447804160).

520945698402 is an abundant number, since it is smaller than the sum of its proper divisors (707949909918).

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

520945698402 is a wasteful number, since it uses less digits than its factorization.

520945698402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30585 (or 30579 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 520945698402 in words is "five hundred twenty billion, nine hundred forty-five million, six hundred ninety-eight thousand, four hundred two".