73378323655 has 32 divisors (see below), whose sum is σ = 108941672448. Its totient is φ = 46202832000.

The previous prime is 73378323593. The next prime is 73378323701. The reversal of 73378323655 is 55632387337.

It is not a de Polignac number, because 73378323655 - 2⁷ = 73378323527 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 335271 + ... + 509080.

It is an arithmetic number, because the mean of its divisors is an integer number (3404427264).

Almost surely, 2^73378323655 is an apocalyptic number.

73378323655 is a deficient number, since it is larger than the sum of its proper divisors (35563348793).

73378323655 is a wasteful number, since it uses less digits than its factorization.

73378323655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844567.

The product of its digits is 9525600, while the sum is 52.

The spelling of 73378323655 in words is "seventy-three billion, three hundred seventy-eight million, three hundred twenty-three thousand, six hundred fifty-five".