100538081213 has 2 divisors, whose sum is σ = 100538081214. Its totient is φ = 100538081212.

The previous prime is 100538081201. The next prime is 100538081291. The reversal of 100538081213 is 312180835001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86908219204 + 13629862009 = 294802^2 + 116747^2 .

It is a cyclic number.

It is not a de Polignac number, because 100538081213 - 2⁸ = 100538080957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100538081213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100538081113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50269040606 + 50269040607.

It is an arithmetic number, because the mean of its divisors is an integer number (50269040607).

Almost surely, 2^100538081213 is an apocalyptic number.

It is an amenable number.

100538081213 is a deficient number, since it is larger than the sum of its proper divisors (1).

100538081213 is an equidigital number, since it uses as much as digits as its factorization.

100538081213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 100538081213 in words is "one hundred billion, five hundred thirty-eight million, eighty-one thousand, two hundred thirteen".