61000312853 has 4 divisors (see below), whose sum is σ = 61192743180. Its totient is φ = 60807882528.

The previous prime is 61000312831. The next prime is 61000312873. The reversal of 61000312853 is 35821300016.

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 16267216849 + 44733096004 = 127543^2 + 211502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61000312853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000312823) by changing a digit.

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, 96214688 + ... + 96215321.

It is an arithmetic number, because the mean of its divisors is an integer number (15298185795).

Almost surely, 2^61000312853 is an apocalyptic number.

It is an amenable number.

61000312853 is a deficient number, since it is larger than the sum of its proper divisors (192430327).

61000312853 is a wasteful number, since it uses less digits than its factorization.

61000312853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192430326.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 61000312853 its reverse (35821300016), we get a palindrome (96821612869).

The spelling of 61000312853 in words is "sixty-one billion, three hundred twelve thousand, eight hundred fifty-three".