520116031551 has 8 divisors (see below), whose sum is σ = 694330679680. Its totient is φ = 346322702232.

The previous prime is 520116031483. The next prime is 520116031571. The reversal of 520116031551 is 155130611025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520116031551 - 2¹³ = 520116023359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520116031571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105326821 + ... + 105331758.

It is an arithmetic number, because the mean of its divisors is an integer number (86791334960).

Almost surely, 2^520116031551 is an apocalyptic number.

520116031551 is a deficient number, since it is larger than the sum of its proper divisors (174214648129).

520116031551 is a wasteful number, since it uses less digits than its factorization.

520116031551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210659405.

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 520116031551 its reverse (155130611025), we get a palindrome (675246642576).

The spelling of 520116031551 in words is "five hundred twenty billion, one hundred sixteen million, thirty-one thousand, five hundred fifty-one".