61066507725602 has 8 divisors (see below), whose sum is σ = 94075430820636. Its totient is φ = 29708030785392.

The previous prime is 61066507725557. The next prime is 61066507725617. The reversal of 61066507725602 is 20652770566016.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60447530589601 + 618977136001 = 7774801^2 + 786751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 412611538613 + ... + 412611538760.

Almost surely, 2^{61066507725602} is an apocalyptic number.

61066507725602 is a deficient number, since it is larger than the sum of its proper divisors (33008923095034).

61066507725602 is a wasteful number, since it uses less digits than its factorization.

61066507725602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825223077412.

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 61066507725602 in words is "sixty-one trillion, sixty-six billion, five hundred seven million, seven hundred twenty-five thousand, six hundred two".