1516151656661 has 8 divisors (see below), whose sum is σ = 1568591361120. Its totient is φ = 1463722526448.

The previous prime is 1516151656627. The next prime is 1516151656693. The reversal of 1516151656661 is 1666561516151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1516151656661 - 2¹⁴ = 1516151640277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516151659661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351291 + ... + 2925896.

It is an arithmetic number, because the mean of its divisors is an integer number (196073920140).

Almost surely, 2^{1516151656661} is an apocalyptic number.

It is an amenable number.

1516151656661 is a deficient number, since it is larger than the sum of its proper divisors (52439704459).

1516151656661 is an equidigital number, since it uses as much as digits as its factorization.

1516151656661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287123.

The product of its digits is 972000, while the sum is 50.

The spelling of 1516151656661 in words is "one trillion, five hundred sixteen billion, one hundred fifty-one million, six hundred fifty-six thousand, six hundred sixty-one".