82515909990340 has 24 divisors (see below), whose sum is σ = 173283583822272. Its totient is φ = 33006331073760.

The previous prime is 82515909990307. The next prime is 82515909990359. The reversal of 82515909990340 is 4309990951528.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33383305 + ... + 35769775.

It is an arithmetic number, because the mean of its divisors is an integer number (7220149325928).

Almost surely, 2^{82515909990340} is an apocalyptic number.

It is an amenable number.

82515909990340 is an abundant number, since it is smaller than the sum of its proper divisors (90767673831932).

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

82515909990340 is a wasteful number, since it uses less digits than its factorization.

82515909990340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115307 (or 4115305 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 64.

The spelling of 82515909990340 in words is "eighty-two trillion, five hundred fifteen billion, nine hundred nine million, nine hundred ninety thousand, three hundred forty".