515005420650 has 96 divisors (see below), whose sum is σ = 1460433395328. Its totient is φ = 117654163200.

The previous prime is 515005420649. The next prime is 515005420663. The reversal of 515005420650 is 56024500515.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1902780 + ... + 2156520.

It is an arithmetic number, because the mean of its divisors is an integer number (15212847868).

Almost surely, 2^515005420650 is an apocalyptic number.

515005420650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 515005420650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730216697664).

515005420650 is an abundant number, since it is smaller than the sum of its proper divisors (945427974678).

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

515005420650 is a wasteful number, since it uses less digits than its factorization.

515005420650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255696 (or 255691 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 515005420650 in words is "five hundred fifteen billion, five million, four hundred twenty thousand, six hundred fifty".