515155156650 has 144 divisors (see below), whose sum is σ = 1405574501760. Its totient is φ = 135248256000.

The previous prime is 515155156627. The next prime is 515155156657. The reversal of 515155156650 is 56651551515.

515155156650 is a `hidden beast` number, since 5 + 15 + 15 + 515 + 66 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 515155156596 and 515155156605.

It is not an unprimeable number, because it can be changed into a prime (515155156657) 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, 12528625 + ... + 12569675.

It is an arithmetic number, because the mean of its divisors is an integer number (9760934040).

Almost surely, 2^515155156650 is an apocalyptic number.

515155156650 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 515155156650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702787250880).

515155156650 is an abundant number, since it is smaller than the sum of its proper divisors (890419345110).

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

515155156650 is a wasteful number, since it uses less digits than its factorization.

515155156650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41501 (or 41493 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 515155156650 in words is "five hundred fifteen billion, one hundred fifty-five million, one hundred fifty-six thousand, six hundred fifty".