73839020549 has 24 divisors (see below), whose sum is σ = 89675633280. Its totient is φ = 59546209536.

The previous prime is 73839020533. The next prime is 73839020587. The reversal of 73839020549 is 94502093837.

It is a happy number.

It is not a de Polignac number, because 73839020549 - 2⁴ = 73839020533 is a prime.

It is a super-2 number, since 2×73839020549² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73839020497 and 73839020506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73839020599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8101607 + ... + 8110715.

It is an arithmetic number, because the mean of its divisors is an integer number (3736484720).

Almost surely, 2^73839020549 is an apocalyptic number.

It is an amenable number.

73839020549 is a deficient number, since it is larger than the sum of its proper divisors (15836612731).

73839020549 is a wasteful number, since it uses less digits than its factorization.

73839020549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13157 (or 13140 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 73839020549 in words is "seventy-three billion, eight hundred thirty-nine million, twenty thousand, five hundred forty-nine".