13995021085 has 4 divisors (see below), whose sum is σ = 16794025308. Its totient is φ = 11196016864.

The previous prime is 13995021067. The next prime is 13995021119. The reversal of 13995021085 is 58012059931.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3616097956 + 10378923129 = 60134^2 + 101877^2 .

It is a cyclic number.

It is not a de Polignac number, because 13995021085 - 2⁷ = 13995020957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399502104 + ... + 1399502113.

It is an arithmetic number, because the mean of its divisors is an integer number (4198506327).

Almost surely, 2^13995021085 is an apocalyptic number.

It is an amenable number.

13995021085 is a deficient number, since it is larger than the sum of its proper divisors (2799004223).

13995021085 is an equidigital number, since it uses as much as digits as its factorization.

13995021085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799004222.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 13995021085 in words is "thirteen billion, nine hundred ninety-five million, twenty-one thousand, eighty-five".