13158785420087 has 4 divisors (see below), whose sum is σ = 13193142562560. Its totient is φ = 13124428277616.

The previous prime is 13158785419921. The next prime is 13158785420113. The reversal of 13158785420087 is 78002458785131.

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 13158785420087 - 2¹² = 13158785415991 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 (13158785420987) 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, 17178570662 + ... + 17178571427.

It is an arithmetic number, because the mean of its divisors is an integer number (3298285640640).

Almost surely, 2^{13158785420087} is an apocalyptic number.

13158785420087 is a deficient number, since it is larger than the sum of its proper divisors (34357142473).

13158785420087 is an equidigital number, since it uses as much as digits as its factorization.

13158785420087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34357142472.

The product of its (nonzero) digits is 15052800, while the sum is 59.

The spelling of 13158785420087 in words is "thirteen trillion, one hundred fifty-eight billion, seven hundred eighty-five million, four hundred twenty thousand, eighty-seven".