8215790342399 has 64 divisors (see below), whose sum is σ = 9282100262400. Its totient is φ = 7226229915648.

The previous prime is 8215790342393. The next prime is 8215790342407. The reversal of 8215790342399 is 9932430975128.

It is a Cunningham number, because it is equal to 2866320²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8215790342399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8215790342393) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6773115917 + ... + 6773117129.

It is an arithmetic number, because the mean of its divisors is an integer number (145032816600).

Almost surely, 2^{8215790342399} is an apocalyptic number.

8215790342399 is a deficient number, since it is larger than the sum of its proper divisors (1066309920001).

8215790342399 is a wasteful number, since it uses less digits than its factorization.

8215790342399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 8215790342399 in words is "eight trillion, two hundred fifteen billion, seven hundred ninety million, three hundred forty-two thousand, three hundred ninety-nine".