520468069981 has 4 divisors (see below), whose sum is σ = 531541858752. Its totient is φ = 509394281212.

The previous prime is 520468069969. The next prime is 520468070009. The reversal of 520468069981 is 189960864025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 520468069981 - 2²³ = 520459681373 is a prime.

It is a super-2 number, since 2×520468069981² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520468067981) 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, 5536894315 + ... + 5536894408.

It is an arithmetic number, because the mean of its divisors is an integer number (132885464688).

Almost surely, 2^520468069981 is an apocalyptic number.

It is an amenable number.

520468069981 is a deficient number, since it is larger than the sum of its proper divisors (11073788771).

520468069981 is a wasteful number, since it uses less digits than its factorization.

520468069981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073788770.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 520468069981 in words is "five hundred twenty billion, four hundred sixty-eight million, sixty-nine thousand, nine hundred eighty-one".