139545045549 has 96 divisors (see below), whose sum is σ = 252460732160. Its totient is φ = 72317546496.

The previous prime is 139545045503. The next prime is 139545045583. The reversal of 139545045549 is 945540545931.

It is a happy number.

139545045549 is a `hidden beast` number, since 1 + 3 + 9 + 5 + 4 + 50 + 45 + 549 = 666.

It is not a de Polignac number, because 139545045549 - 2¹⁵ = 139545012781 is a prime.

It is a super-2 number, since 2×139545045549² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139545045495 and 139545045504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139545045589) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 11036259 + ... + 11048895.

Almost surely, 2^139545045549 is an apocalyptic number.

It is an amenable number.

139545045549 is a deficient number, since it is larger than the sum of its proper divisors (112915686611).

139545045549 is a wasteful number, since it uses less digits than its factorization.

139545045549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12899 (or 12896 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 54.

The spelling of 139545045549 in words is "one hundred thirty-nine billion, five hundred forty-five million, forty-five thousand, five hundred forty-nine".