100215311543 has 2 divisors, whose sum is σ = 100215311544. Its totient is φ = 100215311542.

The previous prime is 100215311527. The next prime is 100215311617. The reversal of 100215311543 is 345113512001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100215311543 - 2⁴ = 100215311527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100215311503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50107655771 + 50107655772.

It is an arithmetic number, because the mean of its divisors is an integer number (50107655772).

Almost surely, 2^100215311543 is an apocalyptic number.

100215311543 is a deficient number, since it is larger than the sum of its proper divisors (1).

100215311543 is an equidigital number, since it uses as much as digits as its factorization.

100215311543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 100215311543 its reverse (345113512001), we get a palindrome (445328823544).

The spelling of 100215311543 in words is "one hundred billion, two hundred fifteen million, three hundred eleven thousand, five hundred forty-three".