520772611641 has 4 divisors (see below), whose sum is σ = 694363482192. Its totient is φ = 347181741092.

The previous prime is 520772611633. The next prime is 520772611691. The reversal of 520772611641 is 146116277025.

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 a cyclic number.

It is not a de Polignac number, because 520772611641 - 2³ = 520772611633 is a prime.

It is a super-2 number, since 2×520772611641² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520772611593 and 520772611602.

It is not an unprimeable number, because it can be changed into a prime (520772611631) 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, 86795435271 + ... + 86795435276.

It is an arithmetic number, because the mean of its divisors is an integer number (173590870548).

Almost surely, 2^520772611641 is an apocalyptic number.

It is an amenable number.

520772611641 is a deficient number, since it is larger than the sum of its proper divisors (173590870551).

520772611641 is a wasteful number, since it uses less digits than its factorization.

520772611641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173590870550.

The product of its (nonzero) digits is 141120, while the sum is 42.

Adding to 520772611641 its reverse (146116277025), we get a palindrome (666888888666).

The spelling of 520772611641 in words is "five hundred twenty billion, seven hundred seventy-two million, six hundred eleven thousand, six hundred forty-one".