613701321791 has 4 divisors (see below), whose sum is σ = 613706791872. Its totient is φ = 613695851712.

The previous prime is 613701321787. The next prime is 613701321803. The reversal of 613701321791 is 197123107316.

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

It is a cyclic number.

It is not a de Polignac number, because 613701321791 - 2² = 613701321787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613701321721) 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, 2563151 + ... + 2792336.

It is an arithmetic number, because the mean of its divisors is an integer number (153426697968).

Almost surely, 2^613701321791 is an apocalyptic number.

613701321791 is a deficient number, since it is larger than the sum of its proper divisors (5470081).

613701321791 is a wasteful number, since it uses less digits than its factorization.

613701321791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470080.

The product of its (nonzero) digits is 47628, while the sum is 41.

The spelling of 613701321791 in words is "six hundred thirteen billion, seven hundred one million, three hundred twenty-one thousand, seven hundred ninety-one".