73485778655 has 8 divisors (see below), whose sum is σ = 88316751600. Its totient is φ = 58699411456.

The previous prime is 73485778633. The next prime is 73485778661. The reversal of 73485778655 is 55687758437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73485778655 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73485778591 and 73485778600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11147810 + ... + 11154399.

It is an arithmetic number, because the mean of its divisors is an integer number (11039593950).

Almost surely, 2^73485778655 is an apocalyptic number.

73485778655 is a deficient number, since it is larger than the sum of its proper divisors (14830972945).

73485778655 is a wasteful number, since it uses less digits than its factorization.

73485778655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22302873.

The product of its digits is 197568000, while the sum is 65.

The spelling of 73485778655 in words is "seventy-three billion, four hundred eighty-five million, seven hundred seventy-eight thousand, six hundred fifty-five".