61685960937 has 16 divisors (see below), whose sum is σ = 86746920000. Its totient is φ = 38882994624.

The previous prime is 61685960911. The next prime is 61685960939. The reversal of 61685960937 is 73906958616.

It is not a de Polignac number, because 61685960937 - 2¹⁵ = 61685928169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61685960939) 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 in 15 ways as a sum of consecutive naturals, for example, 1034062 + ... + 1092087.

It is an arithmetic number, because the mean of its divisors is an integer number (5421682500).

Almost surely, 2^61685960937 is an apocalyptic number.

It is an amenable number.

61685960937 is a deficient number, since it is larger than the sum of its proper divisors (25060959063).

61685960937 is a wasteful number, since it uses less digits than its factorization.

61685960937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126680.

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 61685960937 in words is "sixty-one billion, six hundred eighty-five million, nine hundred sixty thousand, nine hundred thirty-seven".