11461515511 has 2 divisors, whose sum is σ = 11461515512. Its totient is φ = 11461515510.

The previous prime is 11461515491. The next prime is 11461515553. The reversal of 11461515511 is 11551516411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11461515511 - 2⁷ = 11461515383 is a prime.

It is a super-2 number, since 2×11461515511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11461515581) 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 as a sum of consecutive naturals, namely, 5730757755 + 5730757756.

It is an arithmetic number, because the mean of its divisors is an integer number (5730757756).

Almost surely, 2^11461515511 is an apocalyptic number.

11461515511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11461515511 is an equidigital number, since it uses as much as digits as its factorization.

11461515511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 31.

The spelling of 11461515511 in words is "eleven billion, four hundred sixty-one million, five hundred fifteen thousand, five hundred eleven".