11151511013 has 2 divisors, whose sum is σ = 11151511014. Its totient is φ = 11151511012.

The previous prime is 11151511001. The next prime is 11151511037. The reversal of 11151511013 is 31011515111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6564564484 + 4586946529 = 81022^2 + 67727^2 .

It is a cyclic number.

It is not a de Polignac number, because 11151511013 - 2¹⁸ = 11151248869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11151511043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5575755506 + 5575755507.

It is an arithmetic number, because the mean of its divisors is an integer number (5575755507).

Almost surely, 2^11151511013 is an apocalyptic number.

It is an amenable number.

11151511013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11151511013 is an equidigital number, since it uses as much as digits as its factorization.

11151511013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 20.

The spelling of 11151511013 in words is "eleven billion, one hundred fifty-one million, five hundred eleven thousand, thirteen".