520380721047 has 16 divisors (see below), whose sum is σ = 759611082240. Its totient is φ = 314259892800.

The previous prime is 520380721037. The next prime is 520380721079. The reversal of 520380721047 is 740127083025.

It is not a de Polignac number, because 520380721047 - 2⁷ = 520380720919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520380720996 and 520380721014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520380721037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28049647 + ... + 28068192.

It is an arithmetic number, because the mean of its divisors is an integer number (47475692640).

Almost surely, 2^520380721047 is an apocalyptic number.

520380721047 is a deficient number, since it is larger than the sum of its proper divisors (239230361193).

520380721047 is a wasteful number, since it uses less digits than its factorization.

520380721047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56118134.

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 520380721047 in words is "five hundred twenty billion, three hundred eighty million, seven hundred twenty-one thousand, forty-seven".