61143241682 has 4 divisors (see below), whose sum is σ = 91714862526. Its totient is φ = 30571620840.

The previous prime is 61143241681. The next prime is 61143241697. The reversal of 61143241682 is 28614234116.

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 only one way, i.e., 58563516001 + 2579725681 = 241999^2 + 50791^2 .

It is not an unprimeable number, because it can be changed into a prime (61143241681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15285810419 + ... + 15285810422.

Almost surely, 2^61143241682 is an apocalyptic number.

61143241682 is a deficient number, since it is larger than the sum of its proper divisors (30571620844).

61143241682 is a wasteful number, since it uses less digits than its factorization.

61143241682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30571620843.

The product of its digits is 55296, while the sum is 38.

Adding to 61143241682 its reverse (28614234116), we get a palindrome (89757475798).

The spelling of 61143241682 in words is "sixty-one billion, one hundred forty-three million, two hundred forty-one thousand, six hundred eighty-two".