73910781349 has 4 divisors (see below), whose sum is σ = 73916324064. Its totient is φ = 73905238636.

The previous prime is 73910781341. The next prime is 73910781379. The reversal of 73910781349 is 94318701937.

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.

It is a cyclic number.

It is not a de Polignac number, because 73910781349 - 2³ = 73910781341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73910781296 and 73910781305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73910781341) 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, 2751307 + ... + 2778040.

It is an arithmetic number, because the mean of its divisors is an integer number (18479081016).

Almost surely, 2^73910781349 is an apocalyptic number.

It is an amenable number.

73910781349 is a deficient number, since it is larger than the sum of its proper divisors (5542715).

73910781349 is a wasteful number, since it uses less digits than its factorization.

73910781349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5542714.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 73910781349 in words is "seventy-three billion, nine hundred ten million, seven hundred eighty-one thousand, three hundred forty-nine".