12340405053 has 16 divisors (see below), whose sum is σ = 18289680960. Its totient is φ = 8223517008.

The previous prime is 12340405031. The next prime is 12340405067. The reversal of 12340405053 is 35050404321.

It is not a de Polignac number, because 12340405053 - 2²¹ = 12338307901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340405453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27975 + ... + 159572.

It is an arithmetic number, because the mean of its divisors is an integer number (1143105060).

Almost surely, 2^12340405053 is an apocalyptic number.

It is an amenable number.

12340405053 is a deficient number, since it is larger than the sum of its proper divisors (5949275907).

12340405053 is a wasteful number, since it uses less digits than its factorization.

12340405053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189993 (or 189987 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 12340405053 its reverse (35050404321), we get a palindrome (47390809374).

The spelling of 12340405053 in words is "twelve billion, three hundred forty million, four hundred five thousand, fifty-three".