1171561057106 has 48 divisors (see below), whose sum is σ = 1951576351200. Its totient is φ = 527036664000.

The previous prime is 1171561057103. The next prime is 1171561057123. The reversal of 1171561057106 is 6017501651711.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1171561057103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27193070 + ... + 27236118.

It is an arithmetic number, because the mean of its divisors is an integer number (40657840650).

Almost surely, 2^{1171561057106} is an apocalyptic number.

1171561057106 is a deficient number, since it is larger than the sum of its proper divisors (780015294094).

1171561057106 is a wasteful number, since it uses less digits than its factorization.

1171561057106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44231 (or 44220 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 41.

The spelling of 1171561057106 in words is "one trillion, one hundred seventy-one billion, five hundred sixty-one million, fifty-seven thousand, one hundred six".