815158950216 has 128 divisors (see below), whose sum is σ = 2200996627200. Its totient is φ = 250094960640.

The previous prime is 815158950191. The next prime is 815158950241. The reversal of 815158950216 is 612059851518.

815158950216 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (815158950191) and next prime (815158950241).

It is a super-2 number, since 2×815158950216² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182891860 + ... + 182896316.

It is an arithmetic number, because the mean of its divisors is an integer number (17195286150).

Almost surely, 2^815158950216 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 815158950216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100498313600).

815158950216 is an abundant number, since it is smaller than the sum of its proper divisors (1385837676984).

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

815158950216 is a wasteful number, since it uses less digits than its factorization.

815158950216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6039 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 51.

The spelling of 815158950216 in words is "eight hundred fifteen billion, one hundred fifty-eight million, nine hundred fifty thousand, two hundred sixteen".