61166607520756 has 24 divisors (see below), whose sum is σ = 109670307634440. Its totient is φ = 29832478464000.

The previous prime is 61166607520751. The next prime is 61166607520807. The reversal of 61166607520756 is 65702570666116.

It can be written as a sum of positive squares in 4 ways, for example, as 12580967805156 + 48585639715600 = 3546966^2 + 6970340^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61166607520756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61166607520751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29565501 + ... + 31566628.

It is an arithmetic number, because the mean of its divisors is an integer number (4569596151435).

Almost surely, 2^{61166607520756} is an apocalyptic number.

It is an amenable number.

61166607520756 is a deficient number, since it is larger than the sum of its proper divisors (48503700113684).

61166607520756 is a wasteful number, since it uses less digits than its factorization.

61166607520756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61138275 (or 61138273 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 61166607520756 in words is "sixty-one trillion, one hundred sixty-six billion, six hundred seven million, five hundred twenty thousand, seven hundred fifty-six".