11156241455 has 4 divisors (see below), whose sum is σ = 13387489752. Its totient is φ = 8924993160.

The previous prime is 11156241389. The next prime is 11156241461. The reversal of 11156241455 is 55414265111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55414265111 = 19 ⋅2916540269.

It is not a de Polignac number, because 11156241455 - 2¹² = 11156237359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115624141 + ... + 1115624150.

It is an arithmetic number, because the mean of its divisors is an integer number (3346872438).

Almost surely, 2^11156241455 is an apocalyptic number.

11156241455 is a deficient number, since it is larger than the sum of its proper divisors (2231248297).

11156241455 is an equidigital number, since it uses as much as digits as its factorization.

11156241455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231248296.

The product of its digits is 24000, while the sum is 35.

The spelling of 11156241455 in words is "eleven billion, one hundred fifty-six million, two hundred forty-one thousand, four hundred fifty-five".