11151605501 has 2 divisors, whose sum is σ = 11151605502. Its totient is φ = 11151605500.

The previous prime is 11151605473. The next prime is 11151605537. The reversal of 11151605501 is 10550615111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11145869476 + 5736025 = 105574^2 + 2395^2 .

It is an emirp because it is prime and its reverse (10550615111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11151605501 - 2²⁶ = 11084496637 is a prime.

It is a super-2 number, since 2×11151605501² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11151605551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5575802750 + 5575802751.

It is an arithmetic number, because the mean of its divisors is an integer number (5575802751).

Almost surely, 2^11151605501 is an apocalyptic number.

It is an amenable number.

11151605501 is a deficient number, since it is larger than the sum of its proper divisors (1).

11151605501 is an equidigital number, since it uses as much as digits as its factorization.

11151605501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 26.

The spelling of 11151605501 in words is "eleven billion, one hundred fifty-one million, six hundred five thousand, five hundred one".