12354244661 has 12 divisors (see below), whose sum is σ = 13701965472. Its totient is φ = 11046978000.

The previous prime is 12354244613. The next prime is 12354244667. The reversal of 12354244661 is 16644245321.

It is not a de Polignac number, because 12354244661 - 2¹⁰ = 12354243637 is a prime.

It is a super-2 number, since 2×12354244661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354244667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109985 + ... + 191846.

It is an arithmetic number, because the mean of its divisors is an integer number (1141830456).

Almost surely, 2^12354244661 is an apocalyptic number.

12354244661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12354244661 is a deficient number, since it is larger than the sum of its proper divisors (1347720811).

12354244661 is an equidigital number, since it uses as much as digits as its factorization.

12354244661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301964 (or 301903 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

Adding to 12354244661 its reverse (16644245321), we get a palindrome (28998489982).

The spelling of 12354244661 in words is "twelve billion, three hundred fifty-four million, two hundred forty-four thousand, six hundred sixty-one".