520015117401 has 72 divisors (see below), whose sum is σ = 893099057760. Its totient is φ = 301184822016.

The previous prime is 520015117339. The next prime is 520015117409. The reversal of 520015117401 is 104711510025.

520015117401 is a `hidden beast` number, since 5 + 200 + 1 + 51 + 1 + 7 + 401 = 666.

It is not a de Polignac number, because 520015117401 - 2²² = 520010923097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (520015117409) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 325710 + ... + 1070568.

It is an arithmetic number, because the mean of its divisors is an integer number (12404153580).

Almost surely, 2^520015117401 is an apocalyptic number.

520015117401 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

520015117401 is a deficient number, since it is larger than the sum of its proper divisors (373083940359).

520015117401 is a wasteful number, since it uses less digits than its factorization.

520015117401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744917 (or 744892 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

Adding to 520015117401 its reverse (104711510025), we get a palindrome (624726627426).

The spelling of 520015117401 in words is "five hundred twenty billion, fifteen million, one hundred seventeen thousand, four hundred one".