61613838722 has 6 divisors (see below), whose sum is σ = 92421284643. Its totient is φ = 30806743842.

The previous prime is 61613838721. The next prime is 61613838779. The reversal of 61613838722 is 22783831616.

It can be written as a sum of positive squares in only one way, i.e., 30806919361 + 30806919361 = 175519^2 + 175519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175519.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61613838721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 263279 + ... + 438797.

Almost surely, 2^61613838722 is an apocalyptic number.

61613838722 is a deficient number, since it is larger than the sum of its proper divisors (30807445921).

61613838722 is an frugal number, since it uses more digits than its factorization.

61613838722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351040 (or 175521 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 61613838722 in words is "sixty-one billion, six hundred thirteen million, eight hundred thirty-eight thousand, seven hundred twenty-two".