520548791983 has 4 divisors (see below), whose sum is σ = 567871409448. Its totient is φ = 473226174520.

The previous prime is 520548791981. The next prime is 520548792047. The reversal of 520548791983 is 389197845025.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 520548791983 - 2¹ = 520548791981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520548791981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23661308716 + ... + 23661308737.

It is an arithmetic number, because the mean of its divisors is an integer number (141967852362).

Almost surely, 2^520548791983 is an apocalyptic number.

520548791983 is a deficient number, since it is larger than the sum of its proper divisors (47322617465).

520548791983 is a wasteful number, since it uses less digits than its factorization.

520548791983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47322617464.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 520548791983 in words is "five hundred twenty billion, five hundred forty-eight million, seven hundred ninety-one thousand, nine hundred eighty-three".