612513368449 has 4 divisors (see below), whose sum is σ = 612521921536. Its totient is φ = 612504815364.

The previous prime is 612513368429. The next prime is 612513368459. The reversal of 612513368449 is 944863315216.

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 612513368449 - 2⁵ = 612513368417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 612513368396 and 612513368405.

It is not an unprimeable number, because it can be changed into a prime (612513368429) 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, 4168209 + ... + 4312654.

It is an arithmetic number, because the mean of its divisors is an integer number (153130480384).

Almost surely, 2^612513368449 is an apocalyptic number.

It is an amenable number.

612513368449 is a deficient number, since it is larger than the sum of its proper divisors (8553087).

612513368449 is an equidigital number, since it uses as much as digits as its factorization.

612513368449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553086.

The product of its digits is 3732480, while the sum is 52.

The spelling of 612513368449 in words is "six hundred twelve billion, five hundred thirteen million, three hundred sixty-eight thousand, four hundred forty-nine".