102061342735645 has 16 divisors (see below), whose sum is σ = 123784208040240. Its totient is φ = 80777609510400.

The previous prime is 102061342735643. The next prime is 102061342735669. The reversal of 102061342735645 is 546537243160201.

It can be written as a sum of positive squares in 8 ways, for example, as 3458071248921 + 98603271486724 = 1859589^2 + 9929918^2 .

It is not a de Polignac number, because 102061342735645 - 2¹ = 102061342735643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102061342735643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141295216 + ... + 142015705.

It is an arithmetic number, because the mean of its divisors is an integer number (7736513002515).

Almost surely, 2^{102061342735645} is an apocalyptic number.

It is an amenable number.

102061342735645 is a deficient number, since it is larger than the sum of its proper divisors (21722865304595).

102061342735645 is a wasteful number, since it uses less digits than its factorization.

102061342735645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283311696.

The product of its (nonzero) digits is 3628800, while the sum is 49.

Adding to 102061342735645 its reverse (546537243160201), we get a palindrome (648598585895846).

The spelling of 102061342735645 in words is "one hundred two trillion, sixty-one billion, three hundred forty-two million, seven hundred thirty-five thousand, six hundred forty-five".