634065615145145 has 16 divisors (see below), whose sum is σ = 763488236460240. Its totient is φ = 505515797846784.

The previous prime is 634065615145121. The next prime is 634065615145223. The reversal of 634065615145145 is 541541516560436.

It can be written as a sum of positive squares in 8 ways, for example, as 228866550128896 + 405199065016249 = 15128336^2 + 20129557^2 .

It is a cyclic number.

It is not a de Polignac number, because 634065615145145 - 2¹⁴ = 634065615128761 is a prime.

It is a super-2 number, since 2×634065615145145² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183995630 + ... + 187410039.

It is an arithmetic number, because the mean of its divisors is an integer number (47718014778765).

Almost surely, 2^{634065615145145} is an apocalyptic number.

It is an amenable number.

634065615145145 is a deficient number, since it is larger than the sum of its proper divisors (129422621315095).

634065615145145 is a wasteful number, since it uses less digits than its factorization.

634065615145145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371406844.

The product of its (nonzero) digits is 25920000, while the sum is 56.

The spelling of 634065615145145 in words is "six hundred thirty-four trillion, sixty-five billion, six hundred fifteen million, one hundred forty-five thousand, one hundred forty-five".