12870890138947 has 4 divisors (see below), whose sum is σ = 12874360320640. Its totient is φ = 12867419957256.

The previous prime is 12870890138933. The next prime is 12870890138963. The reversal of 12870890138947 is 74983109807821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12870890138947 - 2²³ = 12870881750339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12870890138927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735085283 + ... + 1735092700.

It is an arithmetic number, because the mean of its divisors is an integer number (3218590080160).

Almost surely, 2^{12870890138947} is an apocalyptic number.

12870890138947 is a deficient number, since it is larger than the sum of its proper divisors (3470181693).

12870890138947 is an equidigital number, since it uses as much as digits as its factorization.

12870890138947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470181692.

The product of its (nonzero) digits is 48771072, while the sum is 67.

The spelling of 12870890138947 in words is "twelve trillion, eight hundred seventy billion, eight hundred ninety million, one hundred thirty-eight thousand, nine hundred forty-seven".