1161508771516 has 48 divisors (see below), whose sum is σ = 2105884569600. Its totient is φ = 559888314048.

The previous prime is 1161508771513. The next prime is 1161508771519. The reversal of 1161508771516 is 6151778051611.

It is an interprime number because it is at equal distance from previous prime (1161508771513) and next prime (1161508771519).

It is a self number, because there is not a number n which added to its sum of digits gives 1161508771516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161508771513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311645245 + ... + 311648971.

It is an arithmetic number, because the mean of its divisors is an integer number (43872595200).

Almost surely, 2^{1161508771516} is an apocalyptic number.

It is an amenable number.

1161508771516 is a deficient number, since it is larger than the sum of its proper divisors (944375798084).

1161508771516 is a wasteful number, since it uses less digits than its factorization.

1161508771516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 49.

The spelling of 1161508771516 in words is "one trillion, one hundred sixty-one billion, five hundred eight million, seven hundred seventy-one thousand, five hundred sixteen".