101361865813 has 6 divisors (see below), whose sum is σ = 109160168642. Its totient is φ = 93563739600.

The previous prime is 101361865793. The next prime is 101361865861. The reversal of 101361865813 is 318568163101.

It can be written as a sum of positive squares in 3 ways, for example, as 3541797169 + 97820068644 = 59513^2 + 312762^2 .

It is a de Polignac number, because none of the positive numbers 2^k-101361865813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101361865813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101361865613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1103763 + ... + 1192063.

Almost surely, 2^101361865813 is an apocalyptic number.

101361865813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

101361865813 is a deficient number, since it is larger than the sum of its proper divisors (7798302829).

101361865813 is an frugal number, since it uses more digits than its factorization.

101361865813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176615 (or 88314 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 101361865813 in words is "one hundred one billion, three hundred sixty-one million, eight hundred sixty-five thousand, eight hundred thirteen".