2148901212369 has 4 divisors (see below), whose sum is σ = 2865201616496. Its totient is φ = 1432600808244.

The previous prime is 2148901212317. The next prime is 2148901212379. The reversal of 2148901212369 is 9632121098412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2148901212369 - 2¹¹ = 2148901210321 is a prime.

It is a super-2 number, since 2×2148901212369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2148901212379) 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, 358150202059 + ... + 358150202064.

It is an arithmetic number, because the mean of its divisors is an integer number (716300404124).

Almost surely, 2^{2148901212369} is an apocalyptic number.

It is an amenable number.

2148901212369 is a deficient number, since it is larger than the sum of its proper divisors (716300404127).

2148901212369 is an equidigital number, since it uses as much as digits as its factorization.

2148901212369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716300404126.

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 2148901212369 in words is "two trillion, one hundred forty-eight billion, nine hundred one million, two hundred twelve thousand, three hundred sixty-nine".