61641476570417 has 4 divisors (see below), whose sum is σ = 61641851571300. Its totient is φ = 61641101569536.

The previous prime is 61641476570381. The next prime is 61641476570483. The reversal of 61641476570417 is 71407567414616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32249042022976 + 29392434547441 = 5678824^2 + 5421479^2 .

It is a cyclic number.

It is not a de Polignac number, because 61641476570417 - 2⁸ = 61641476570161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61641476570117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187253768 + ... + 187582665.

It is an arithmetic number, because the mean of its divisors is an integer number (15410462892825).

Almost surely, 2^{61641476570417} is an apocalyptic number.

It is an amenable number.

61641476570417 is a deficient number, since it is larger than the sum of its proper divisors (375000883).

61641476570417 is a wasteful number, since it uses less digits than its factorization.

61641476570417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375000882.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 61641476570417 in words is "sixty-one trillion, six hundred forty-one billion, four hundred seventy-six million, five hundred seventy thousand, four hundred seventeen".