320145534838 has 16 divisors (see below), whose sum is σ = 487553859360. Its totient is φ = 157645627776.

The previous prime is 320145534799. The next prime is 320145534847. The reversal of 320145534838 is 838435541023.

It is a super-3 number, since 3×320145534838³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4475898 + ... + 4546861.

It is an arithmetic number, because the mean of its divisors is an integer number (30472116210).

Almost surely, 2^320145534838 is an apocalyptic number.

320145534838 is a deficient number, since it is larger than the sum of its proper divisors (167408324522).

320145534838 is a wasteful number, since it uses less digits than its factorization.

320145534838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023031.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 320145534838 in words is "three hundred twenty billion, one hundred forty-five million, five hundred thirty-four thousand, eight hundred thirty-eight".