11343898651661 has 4 divisors (see below), whose sum is σ = 11343906376800. Its totient is φ = 11343890926524.

The previous prime is 11343898651651. The next prime is 11343898651663. The reversal of 11343898651661 is 16615689834311.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11343898651661 - 2¹⁸ = 11343898389517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11343898651594 and 11343898651603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11343898651663) 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, 905081 + ... + 4848398.

It is an arithmetic number, because the mean of its divisors is an integer number (2835976594200).

Almost surely, 2^{11343898651661} is an apocalyptic number.

It is an amenable number.

11343898651661 is a deficient number, since it is larger than the sum of its proper divisors (7725139).

11343898651661 is an equidigital number, since it uses as much as digits as its factorization.

11343898651661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7725138.

The product of its digits is 22394880, while the sum is 62.

The spelling of 11343898651661 in words is "eleven trillion, three hundred forty-three billion, eight hundred ninety-eight million, six hundred fifty-one thousand, six hundred sixty-one".