61642514120153 has 8 divisors (see below), whose sum is σ = 61841610045288. Its totient is φ = 61443431921664.

The previous prime is 61642514120147. The next prime is 61642514120203. The reversal of 61642514120153 is 35102141524616.

It can be written as a sum of positive squares in 4 ways, for example, as 14814400706704 + 46828113413449 = 3848948^2 + 6843107^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61642514120153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61642514120153.

It is not an unprimeable number, because it can be changed into a prime (61642514129153) 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, 5602625 + ... + 12436817.

It is an arithmetic number, because the mean of its divisors is an integer number (7730201255661).

Almost surely, 2^{61642514120153} is an apocalyptic number.

It is an amenable number.

61642514120153 is a deficient number, since it is larger than the sum of its proper divisors (199095925135).

61642514120153 is a wasteful number, since it uses less digits than its factorization.

61642514120153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863323.

The product of its (nonzero) digits is 172800, while the sum is 41.

Adding to 61642514120153 its reverse (35102141524616), we get a palindrome (96744655644769).

The spelling of 61642514120153 in words is "sixty-one trillion, six hundred forty-two billion, five hundred fourteen million, one hundred twenty thousand, one hundred fifty-three".