11515011021043 has 2 divisors, whose sum is σ = 11515011021044. Its totient is φ = 11515011021042.

The previous prime is 11515011020987. The next prime is 11515011021127. The reversal of 11515011021043 is 34012011051511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11515011021043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11515011020999 and 11515011021017.

It is not a weakly prime, because it can be changed into another prime (11515011025043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757505510521 + 5757505510522.

It is an arithmetic number, because the mean of its divisors is an integer number (5757505510522).

Almost surely, 2^{11515011021043} is an apocalyptic number.

11515011021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515011021043 is an equidigital number, since it uses as much as digits as its factorization.

11515011021043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 11515011021043 its reverse (34012011051511), we get a palindrome (45527022072554).

The spelling of 11515011021043 in words is "eleven trillion, five hundred fifteen billion, eleven million, twenty-one thousand, forty-three".