61243124680 has 16 divisors (see below), whose sum is σ = 137797030620. Its totient is φ = 24497249856.

The previous prime is 61243124653. The next prime is 61243124681. The reversal of 61243124680 is 8642134216.

It can be written as a sum of positive squares in 2 ways, for example, as 59939770276 + 1303354404 = 244826^2 + 36102^2 .

It is not an unprimeable number, because it can be changed into a prime (61243124681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765539019 + ... + 765539098.

Almost surely, 2^61243124680 is an apocalyptic number.

It is an amenable number.

61243124680 is an abundant number, since it is smaller than the sum of its proper divisors (76553905940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61243124680 is a wasteful number, since it uses less digits than its factorization.

61243124680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531078128 (or 1531078124 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 61243124680 its reverse (8642134216), we get a palindrome (69885258896).

The spelling of 61243124680 in words is "sixty-one billion, two hundred forty-three million, one hundred twenty-four thousand, six hundred eighty".