1166621151736 has 8 divisors (see below), whose sum is σ = 2187414659520. Its totient is φ = 583310575864.

The previous prime is 1166621151713. The next prime is 1166621151803. The reversal of 1166621151736 is 6371511266611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1166621151736³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72913821976 + ... + 72913821991.

It is an arithmetic number, because the mean of its divisors is an integer number (273426832440).

Almost surely, 2^{1166621151736} is an apocalyptic number.

It is an amenable number.

1166621151736 is a deficient number, since it is larger than the sum of its proper divisors (1020793507784).

1166621151736 is a wasteful number, since it uses less digits than its factorization.

1166621151736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145827643973 (or 145827643969 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The spelling of 1166621151736 in words is "one trillion, one hundred sixty-six billion, six hundred twenty-one million, one hundred fifty-one thousand, seven hundred thirty-six".