16166514642545 has 32 divisors (see below), whose sum is σ = 19981588032000. Its totient is φ = 12551038156800.

The previous prime is 16166514642539. The next prime is 16166514642559. The reversal of 16166514642545 is 54524641566161.

It is a de Polignac number, because none of the positive numbers 2^k-16166514642545 is a prime.

It is a super-2 number, since 2×16166514642545² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153037745 + ... + 153143345.

It is an arithmetic number, because the mean of its divisors is an integer number (624424626000).

Almost surely, 2^{16166514642545} is an apocalyptic number.

It is an amenable number.

16166514642545 is a deficient number, since it is larger than the sum of its proper divisors (3815073389455).

16166514642545 is a wasteful number, since it uses less digits than its factorization.

16166514642545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112313.

The product of its digits is 20736000, while the sum is 56.

The spelling of 16166514642545 in words is "sixteen trillion, one hundred sixty-six billion, five hundred fourteen million, six hundred forty-two thousand, five hundred forty-five".