61351215316 has 6 divisors (see below), whose sum is σ = 107364626810. Its totient is φ = 30675607656.

The previous prime is 61351215293. The next prime is 61351215347.

61351215316 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 53314810000 + 8036405316 = 230900^2 + 89646^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7668901911 + ... + 7668901918.

Almost surely, 2^61351215316 is an apocalyptic number.

It is an amenable number.

61351215316 is a deficient number, since it is larger than the sum of its proper divisors (46013411494).

61351215316 is a wasteful number, since it uses less digits than its factorization.

61351215316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15337803833 (or 15337803831 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The spelling of 61351215316 in words is "sixty-one billion, three hundred fifty-one million, two hundred fifteen thousand, three hundred sixteen".