61355252612 has 6 divisors (see below), whose sum is σ = 107371692078. Its totient is φ = 30677626304.

The previous prime is 61355252611. The next prime is 61355252753. The reversal of 61355252612 is 21625255316.

It can be written as a sum of positive squares in only one way, i.e., 36117482116 + 25237770496 = 190046^2 + 158864^2 .

It is not an unprimeable number, because it can be changed into a prime (61355252611) 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 as a sum of consecutive naturals, namely, 7669406573 + ... + 7669406580.

It is an arithmetic number, because the mean of its divisors is an integer number (17895282013).

Almost surely, 2^61355252612 is an apocalyptic number.

It is an amenable number.

61355252612 is a deficient number, since it is larger than the sum of its proper divisors (46016439466).

61355252612 is a wasteful number, since it uses less digits than its factorization.

61355252612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338813157 (or 15338813155 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The spelling of 61355252612 in words is "sixty-one billion, three hundred fifty-five million, two hundred fifty-two thousand, six hundred twelve".