145081644939 has 120 divisors (see below), whose sum is σ = 274412171264. Its totient is φ = 74769156000.

The previous prime is 145081644937. The next prime is 145081644977. The reversal of 145081644939 is 939446180541.

145081644939 is a `hidden beast` number, since 1 + 4 + 508 + 1 + 6 + 44 + 93 + 9 = 666.

145081644939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145081644939 - 2¹ = 145081644937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145081644937) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 8704764 + ... + 8721414.

Almost surely, 2^145081644939 is an apocalyptic number.

145081644939 is a deficient number, since it is larger than the sum of its proper divisors (129330526325).

145081644939 is a wasteful number, since it uses less digits than its factorization.

145081644939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16819 (or 16799 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 145081644939 in words is "one hundred forty-five billion, eighty-one million, six hundred forty-four thousand, nine hundred thirty-nine".