61123525344985 has 16 divisors (see below), whose sum is σ = 74909325802752. Its totient is φ = 47858103760000.

The previous prime is 61123525344983. The next prime is 61123525345007. The reversal of 61123525344985 is 58944352532116.

It is not a de Polignac number, because 61123525344985 - 2¹ = 61123525344983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61123525344983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38658210 + ... + 40208260.

It is an arithmetic number, because the mean of its divisors is an integer number (4681832862672).

Almost surely, 2^{61123525344985} is an apocalyptic number.

It is an amenable number.

61123525344985 is a deficient number, since it is larger than the sum of its proper divisors (13785800457767).

61123525344985 is a wasteful number, since it uses less digits than its factorization.

61123525344985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717904.

The product of its digits is 31104000, while the sum is 58.

The spelling of 61123525344985 in words is "sixty-one trillion, one hundred twenty-three billion, five hundred twenty-five million, three hundred forty-four thousand, nine hundred eighty-five".