613722089281 has 16 divisors (see below), whose sum is σ = 724151096320. Its totient is φ = 508987722240.

The previous prime is 613722089269. The next prime is 613722089311. The reversal of 613722089281 is 182980227316.

It is a cyclic number.

It is not a de Polignac number, because 613722089281 - 2⁵ = 613722089249 is a prime.

It is a super-2 number, since 2×613722089281² (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 (613722084281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985945 + ... + 1483081.

It is an arithmetic number, because the mean of its divisors is an integer number (45259443520).

Almost surely, 2^613722089281 is an apocalyptic number.

It is an amenable number.

613722089281 is a deficient number, since it is larger than the sum of its proper divisors (110429007039).

613722089281 is a wasteful number, since it uses less digits than its factorization.

613722089281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502864.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 613722089281 in words is "six hundred thirteen billion, seven hundred twenty-two million, eighty-nine thousand, two hundred eighty-one".