613507772305 has 4 divisors (see below), whose sum is σ = 736209326772. Its totient is φ = 490806217840.

The previous prime is 613507772299. The next prime is 613507772327. The reversal of 613507772305 is 503277705316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341428693761 + 272079078544 = 584319^2 + 521612^2 .

It is a de Polignac number, because none of the positive numbers 2^k-613507772305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61350777226 + ... + 61350777235.

It is an arithmetic number, because the mean of its divisors is an integer number (184052331693).

Almost surely, 2^613507772305 is an apocalyptic number.

It is an amenable number.

613507772305 is a deficient number, since it is larger than the sum of its proper divisors (122701554467).

613507772305 is a wasteful number, since it uses less digits than its factorization.

613507772305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122701554466.

The product of its (nonzero) digits is 926100, while the sum is 46.

The spelling of 613507772305 in words is "six hundred thirteen billion, five hundred seven million, seven hundred seventy-two thousand, three hundred five".