1161506156105 has 16 divisors (see below), whose sum is σ = 1394653108800. Its totient is φ = 928641309120.

The previous prime is 1161506156087. The next prime is 1161506156113. The reversal of 1161506156105 is 5016516051611.

It is a happy number.

It is not a de Polignac number, because 1161506156105 - 2⁴⁰ = 61994528329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66215426 + ... + 66232964.

It is an arithmetic number, because the mean of its divisors is an integer number (87165819300).

Almost surely, 2^{1161506156105} is an apocalyptic number.

It is an amenable number.

1161506156105 is a deficient number, since it is larger than the sum of its proper divisors (233146952695).

1161506156105 is a wasteful number, since it uses less digits than its factorization.

1161506156105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24824.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1161506156105 in words is "one trillion, one hundred sixty-one billion, five hundred six million, one hundred fifty-six thousand, one hundred five".