520123314421545 has 16 divisors (see below), whose sum is σ = 833054354903232. Its totient is φ = 277113417081920.

The previous prime is 520123314421531. The next prime is 520123314421577. The reversal of 520123314421545 is 545124413321025.

It is not a de Polignac number, because 520123314421545 - 2¹² = 520123314417449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520123314421497 and 520123314421506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17855231382 + ... + 17855260511.

It is an arithmetic number, because the mean of its divisors is an integer number (52065897181452).

Almost surely, 2^{520123314421545} is an apocalyptic number.

It is an amenable number.

520123314421545 is a deficient number, since it is larger than the sum of its proper divisors (312931040481687).

520123314421545 is a wasteful number, since it uses less digits than its factorization.

520123314421545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35710492872.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 520123314421545 in words is "five hundred twenty trillion, one hundred twenty-three billion, three hundred fourteen million, four hundred twenty-one thousand, five hundred forty-five".