520311004140 has 48 divisors (see below), whose sum is σ = 1503866649600. Its totient is φ = 134273807040.

The previous prime is 520311004123. The next prime is 520311004151. The reversal of 520311004140 is 41400113025.

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, 139866690 + ... + 139870409.

It is an arithmetic number, because the mean of its divisors is an integer number (31330555200).

Almost surely, 2^520311004140 is an apocalyptic number.

It is an amenable number.

520311004140 is an abundant number, since it is smaller than the sum of its proper divisors (983555645460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520311004140 is a wasteful number, since it uses less digits than its factorization.

520311004140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279737142 (or 279737140 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 520311004140 its reverse (41400113025), we get a palindrome (561711117165).

The spelling of 520311004140 in words is "five hundred twenty billion, three hundred eleven million, four thousand, one hundred forty".