100861780717245 has 16 divisors (see below), whose sum is σ = 161393428765440. Its totient is φ = 53788089843264.

The previous prime is 100861780717237. The next prime is 100861780717253. The reversal of 100861780717245 is 542717087168001.

It is an interprime number because it is at equal distance from previous prime (100861780717237) and next prime (100861780717253).

It is not a de Polignac number, because 100861780717245 - 2³ = 100861780717237 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303570469 + ... + 303902538.

It is an arithmetic number, because the mean of its divisors is an integer number (10087089297840).

Almost surely, 2^{100861780717245} is an apocalyptic number.

100861780717245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100861780717245 is a deficient number, since it is larger than the sum of its proper divisors (60531648048195).

100861780717245 is a wasteful number, since it uses less digits than its factorization.

100861780717245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607484084.

The product of its (nonzero) digits is 5268480, while the sum is 57.

The spelling of 100861780717245 in words is "one hundred trillion, eight hundred sixty-one billion, seven hundred eighty million, seven hundred seventeen thousand, two hundred forty-five".