149078185165 has 128 divisors (see below), whose sum is σ = 231417446400. Its totient is φ = 89669099520.

The previous prime is 149078185127. The next prime is 149078185189. The reversal of 149078185165 is 561581870941.

It is not a de Polignac number, because 149078185165 - 2¹⁷ = 149078054093 is a prime.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 393345946 + ... + 393346324.

It is an arithmetic number, because the mean of its divisors is an integer number (1807948800).

Almost surely, 2^149078185165 is an apocalyptic number.

It is an amenable number.

149078185165 is a deficient number, since it is larger than the sum of its proper divisors (82339261235).

149078185165 is a wasteful number, since it uses less digits than its factorization.

149078185165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 149078185165 in words is "one hundred forty-nine billion, seventy-eight million, one hundred eighty-five thousand, one hundred sixty-five".