8220260605385 has 8 divisors (see below), whose sum is σ = 9927142744776. Its totient is φ = 6534321805440.

The previous prime is 8220260605379. The next prime is 8220260605409. The reversal of 8220260605385 is 5835060620228.

It can be written as a sum of positive squares in 4 ways, for example, as 1637916195721 + 6582344409664 = 1279811^2 + 2565608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8220260605385 - 2⁸ = 8220260605129 is a prime.

It is a Duffinian number.

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, 5235833996 + ... + 5235835565.

It is an arithmetic number, because the mean of its divisors is an integer number (1240892843097).

Almost surely, 2^{8220260605385} is an apocalyptic number.

It is an amenable number.

8220260605385 is a deficient number, since it is larger than the sum of its proper divisors (1706882139391).

8220260605385 is a wasteful number, since it uses less digits than its factorization.

8220260605385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471669723.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 8220260605385 in words is "eight trillion, two hundred twenty billion, two hundred sixty million, six hundred five thousand, three hundred eighty-five".