149518656065 has 16 divisors (see below), whose sum is σ = 179619800400. Its totient is φ = 119483400192.

The previous prime is 149518656029. The next prime is 149518656073. The reversal of 149518656065 is 560656815941.

It can be written as a sum of positive squares in 8 ways, for example, as 8196043024 + 141322613041 = 90532^2 + 375929^2 .

It is a cyclic number.

It is not a de Polignac number, because 149518656065 - 2⁸ = 149518655809 is a prime.

It is a super-2 number, since 2×149518656065² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149518656065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26845601 + ... + 26851169.

It is an arithmetic number, because the mean of its divisors is an integer number (11226237525).

Almost surely, 2^149518656065 is an apocalyptic number.

It is an amenable number.

149518656065 is a deficient number, since it is larger than the sum of its proper divisors (30101144335).

149518656065 is a wasteful number, since it uses less digits than its factorization.

149518656065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10516.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 149518656065 in words is "one hundred forty-nine billion, five hundred eighteen million, six hundred fifty-six thousand, sixty-five".