61306713122 has 6 divisors (see below), whose sum is σ = 91960594929. Its totient is φ = 30653181480.

The previous prime is 61306713119. The next prime is 61306713133. The reversal of 61306713122 is 22131760316.

It can be written as a sum of positive squares in 2 ways, for example, as 43460157841 + 17846555281 = 208471^2 + 133591^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175081.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 262622 + ... + 437702.

Almost surely, 2^61306713122 is an apocalyptic number.

61306713122 is a deficient number, since it is larger than the sum of its proper divisors (30653881807).

61306713122 is an frugal number, since it uses more digits than its factorization.

61306713122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350164 (or 175083 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

Multiplying 61306713122 by its sum of digits (32), we get a square (1961814819904 = 1400648²).

The spelling of 61306713122 in words is "sixty-one billion, three hundred six million, seven hundred thirteen thousand, one hundred twenty-two".