515051419540 has 288 divisors, whose sum is σ = 1339009781760. Its totient is φ = 165577902336.

The previous prime is 515051419507. The next prime is 515051419541. The reversal of 515051419540 is 45914150515.

It is a junction number, because it is equal to n+sod(n) for n = 515051419493 and 515051419502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515051419541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 360932307 + ... + 360933733.

It is an arithmetic number, because the mean of its divisors is an integer number (4649339520).

Almost surely, 2^515051419540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 515051419540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669504890880).

515051419540 is an abundant number, since it is smaller than the sum of its proper divisors (823958362220).

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

515051419540 is a wasteful number, since it uses less digits than its factorization.

515051419540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 40.

The spelling of 515051419540 in words is "five hundred fifteen billion, fifty-one million, four hundred nineteen thousand, five hundred forty".