11161555006005 has 24 divisors (see below), whose sum is σ = 19347999222240. Its totient is φ = 5952428143200.

The previous prime is 11161555005961. The next prime is 11161555006033. The reversal of 11161555006005 is 50060055516111.

It is a happy number.

It is not a de Polignac number, because 11161555006005 - 2¹⁶ = 11161554940469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7682475 + ... + 9019064.

It is an arithmetic number, because the mean of its divisors is an integer number (806166634260).

Almost surely, 2^{11161555006005} is an apocalyptic number.

11161555006005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11161555006005 is a deficient number, since it is larger than the sum of its proper divisors (8186444216235).

11161555006005 is a wasteful number, since it uses less digits than its factorization.

11161555006005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716401 (or 16716398 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 11161555006005 in words is "eleven trillion, one hundred sixty-one billion, five hundred fifty-five million, six thousand, five".