166415344545 has 8 divisors (see below), whose sum is σ = 266264551296. Its totient is φ = 88754850416.

The previous prime is 166415344519. The next prime is 166415344559. The reversal of 166415344545 is 545443514661.

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 166415344545 - 2⁹ = 166415344033 is a prime.

It is a super-2 number, since 2×166415344545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166415344494 and 166415344503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5547178137 + ... + 5547178166.

It is an arithmetic number, because the mean of its divisors is an integer number (33283068912).

Almost surely, 2^166415344545 is an apocalyptic number.

166415344545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166415344545 is a deficient number, since it is larger than the sum of its proper divisors (99849206751).

166415344545 is a wasteful number, since it uses less digits than its factorization.

166415344545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11094356311.

The product of its digits is 3456000, while the sum is 48.

The spelling of 166415344545 in words is "one hundred sixty-six billion, four hundred fifteen million, three hundred forty-four thousand, five hundred forty-five".