61516500712 has 32 divisors (see below), whose sum is σ = 115846112520. Its totient is φ = 30624317440.

The previous prime is 61516500707. The next prime is 61516500739. The reversal of 61516500712 is 21700561516.

It can be written as a sum of positive squares in 4 ways, for example, as 53873195236 + 7643305476 = 232106^2 + 87426^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5457162 + ... + 5468422.

Almost surely, 2^61516500712 is an apocalyptic number.

It is an amenable number.

61516500712 is a deficient number, since it is larger than the sum of its proper divisors (54329611808).

61516500712 is a wasteful number, since it uses less digits than its factorization.

61516500712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181 (or 14177 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 61516500712 in words is "sixty-one billion, five hundred sixteen million, five hundred thousand, seven hundred twelve".