12808157873505 has 32 divisors (see below), whose sum is σ = 20851000414848. Its totient is φ = 6711938112000.

The previous prime is 12808157873437. The next prime is 12808157873551. The reversal of 12808157873505 is 50537875180821.

It is not a de Polignac number, because 12808157873505 - 2¹⁷ = 12808157742433 is a prime.

It is a super-2 number, since 2×12808157873505² (a number of 27 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, 6524196 + ... + 8257205.

It is an arithmetic number, because the mean of its divisors is an integer number (651593762964).

Almost surely, 2^{12808157873505} is an apocalyptic number.

12808157873505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12808157873505 is a deficient number, since it is larger than the sum of its proper divisors (8042842541343).

12808157873505 is a wasteful number, since it uses less digits than its factorization.

12808157873505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782417.

The product of its (nonzero) digits is 18816000, while the sum is 60.

The spelling of 12808157873505 in words is "twelve trillion, eight hundred eight billion, one hundred fifty-seven million, eight hundred seventy-three thousand, five hundred five".