520154661241 has 16 divisors (see below), whose sum is σ = 547449969600. Its totient is φ = 493490713408.

The previous prime is 520154661203. The next prime is 520154661253. The reversal of 520154661241 is 142166451025.

It is not a de Polignac number, because 520154661241 - 2¹³ = 520154653049 is a prime.

It is a super-2 number, since 2×520154661241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520154661241.

It is not an unprimeable number, because it can be changed into a prime (520154661941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3926610 + ... + 4056916.

It is an arithmetic number, because the mean of its divisors is an integer number (34215623100).

Almost surely, 2^520154661241 is an apocalyptic number.

It is an amenable number.

520154661241 is a deficient number, since it is larger than the sum of its proper divisors (27295308359).

520154661241 is a wasteful number, since it uses less digits than its factorization.

520154661241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132728.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 520154661241 in words is "five hundred twenty billion, one hundred fifty-four million, six hundred sixty-one thousand, two hundred forty-one".