613564553497 has 4 divisors (see below), whose sum is σ = 701216632576. Its totient is φ = 525912474420.

The previous prime is 613564553477. The next prime is 613564553519. The reversal of 613564553497 is 794355465316.

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 a de Polignac number, because none of the positive numbers 2^k-613564553497 is a prime.

It is a super-2 number, since 2×613564553497² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613564553477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43826039529 + ... + 43826039542.

It is an arithmetic number, because the mean of its divisors is an integer number (175304158144).

Almost surely, 2^613564553497 is an apocalyptic number.

It is an amenable number.

613564553497 is a deficient number, since it is larger than the sum of its proper divisors (87652079079).

613564553497 is an equidigital number, since it uses as much as digits as its factorization.

613564553497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87652079078.

The product of its digits is 40824000, while the sum is 58.

The spelling of 613564553497 in words is "six hundred thirteen billion, five hundred sixty-four million, five hundred fifty-three thousand, four hundred ninety-seven".