73353657613 has 4 divisors (see below), whose sum is σ = 73626348060. Its totient is φ = 73080967168.

The previous prime is 73353657571. The next prime is 73353657617. The reversal of 73353657613 is 31675635337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31675635337 = 11969 ⋅2646473.

It can be written as a sum of positive squares in 2 ways, for example, as 25374259849 + 47979397764 = 159293^2 + 219042^2 .

It is a cyclic number.

It is not a de Polignac number, because 73353657613 - 2³³ = 64763723021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73353657617) 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 3 ways as a sum of consecutive naturals, for example, 136344820 + ... + 136345357.

It is an arithmetic number, because the mean of its divisors is an integer number (18406587015).

Almost surely, 2^73353657613 is an apocalyptic number.

It is an amenable number.

73353657613 is a deficient number, since it is larger than the sum of its proper divisors (272690447).

73353657613 is a wasteful number, since it uses less digits than its factorization.

73353657613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272690446.

The product of its digits is 3572100, while the sum is 49.

The spelling of 73353657613 in words is "seventy-three billion, three hundred fifty-three million, six hundred fifty-seven thousand, six hundred thirteen".