61107728252 has 6 divisors (see below), whose sum is σ = 106938524448. Its totient is φ = 30553864124.

The previous prime is 61107728207. The next prime is 61107728263. The reversal of 61107728252 is 25282770116.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7638466028 + ... + 7638466035.

It is an arithmetic number, because the mean of its divisors is an integer number (17823087408).

Almost surely, 2^61107728252 is an apocalyptic number.

It is an amenable number.

61107728252 is a deficient number, since it is larger than the sum of its proper divisors (45830796196).

61107728252 is a wasteful number, since it uses less digits than its factorization.

61107728252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15276932067 (or 15276932065 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 61107728252 in words is "sixty-one billion, one hundred seven million, seven hundred twenty-eight thousand, two hundred fifty-two".