72648305349 has 4 divisors (see below), whose sum is σ = 96864407136. Its totient is φ = 48432203564.

The previous prime is 72648305347. The next prime is 72648305417. The reversal of 72648305349 is 94350384627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94350384627 = 3 ⋅31450128209.

It is a cyclic number.

It is not a de Polignac number, because 72648305349 - 2¹ = 72648305347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72648305347) 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 3 ways as a sum of consecutive naturals, for example, 12108050889 + ... + 12108050894.

It is an arithmetic number, because the mean of its divisors is an integer number (24216101784).

Almost surely, 2^72648305349 is an apocalyptic number.

It is an amenable number.

72648305349 is a deficient number, since it is larger than the sum of its proper divisors (24216101787).

72648305349 is a wasteful number, since it uses less digits than its factorization.

72648305349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24216101786.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 72648305349 in words is "seventy-two billion, six hundred forty-eight million, three hundred five thousand, three hundred forty-nine".