1161517111610 has 16 divisors (see below), whose sum is σ = 2109911819400. Its totient is φ = 460344396096.

The previous prime is 1161517111603. The next prime is 1161517111649. The reversal of 1161517111610 is 161117151611.

It can be written as a sum of positive squares in 4 ways, for example, as 847951830649 + 313565280961 = 920843^2 + 559969^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532804925 + ... + 532807104.

Almost surely, 2^{1161517111610} is an apocalyptic number.

1161517111610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161517111610 is a deficient number, since it is larger than the sum of its proper divisors (948394707790).

1161517111610 is a wasteful number, since it uses less digits than its factorization.

1161517111610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065612145.

The product of its (nonzero) digits is 1260, while the sum is 32.

The spelling of 1161517111610 in words is "one trillion, one hundred sixty-one billion, five hundred seventeen million, one hundred eleven thousand, six hundred ten".