612340513553653 has 4 divisors (see below), whose sum is σ = 612340941673888. Its totient is φ = 612340085433420.

The previous prime is 612340513553623. The next prime is 612340513553701. The reversal of 612340513553653 is 356355315043216.

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 a cyclic number.

It is not a de Polignac number, because 612340513553653 - 2²¹ = 612340511456501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612340513553653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612340513553623) 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, 211907451 + ... + 214777672.

It is an arithmetic number, because the mean of its divisors is an integer number (153085235418472).

Almost surely, 2^{612340513553653} is an apocalyptic number.

It is an amenable number.

612340513553653 is a deficient number, since it is larger than the sum of its proper divisors (428120235).

612340513553653 is a wasteful number, since it uses less digits than its factorization.

612340513553653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428120234.

The product of its (nonzero) digits is 14580000, while the sum is 52.

Adding to 612340513553653 its reverse (356355315043216), we get a palindrome (968695828596869).

The spelling of 612340513553653 in words is "six hundred twelve trillion, three hundred forty billion, five hundred thirteen million, five hundred fifty-three thousand, six hundred fifty-three".