11156141551 has 4 divisors (see below), whose sum is σ = 11169932400. Its totient is φ = 11142350704.

The previous prime is 11156141537. The next prime is 11156141597. The reversal of 11156141551 is 15514165111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15514165111 = 41 ⋅378394271.

It is a cyclic number.

It is not a de Polignac number, because 11156141551 - 2⁵ = 11156141519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156141531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6894211 + ... + 6895828.

It is an arithmetic number, because the mean of its divisors is an integer number (2792483100).

Almost surely, 2^11156141551 is an apocalyptic number.

11156141551 is a deficient number, since it is larger than the sum of its proper divisors (13790849).

11156141551 is an equidigital number, since it uses as much as digits as its factorization.

11156141551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13790848.

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

The spelling of 11156141551 in words is "eleven billion, one hundred fifty-six million, one hundred forty-one thousand, five hundred fifty-one".