1296890185585 has 16 divisors (see below), whose sum is σ = 1557225387072. Its totient is φ = 1036874260800.

The previous prime is 1296890185543. The next prime is 1296890185601. The reversal of 1296890185585 is 5855810986921.

It is not a de Polignac number, because 1296890185585 - 2¹⁹ = 1296889661297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1296890185585.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62911930 + ... + 62932540.

It is an arithmetic number, because the mean of its divisors is an integer number (97326586692).

Almost surely, 2^{1296890185585} is an apocalyptic number.

It is an amenable number.

1296890185585 is a deficient number, since it is larger than the sum of its proper divisors (260335201487).

1296890185585 is a wasteful number, since it uses less digits than its factorization.

1296890185585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27744.

The product of its (nonzero) digits is 62208000, while the sum is 67.

The spelling of 1296890185585 in words is "one trillion, two hundred ninety-six billion, eight hundred ninety million, one hundred eighty-five thousand, five hundred eighty-five".