75391930655 has 4 divisors (see below), whose sum is σ = 90470316792. Its totient is φ = 60313544520.

The previous prime is 75391930643. The next prime is 75391930673. The reversal of 75391930655 is 55603919357.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 75391930655 - 2²⁰ = 75390882079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75391930597 and 75391930606.

It is a congruent number.

It is an unprimeable number.

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, 7539193061 + ... + 7539193070.

It is an arithmetic number, because the mean of its divisors is an integer number (22617579198).

Almost surely, 2^75391930655 is an apocalyptic number.

75391930655 is a deficient number, since it is larger than the sum of its proper divisors (15078386137).

75391930655 is a wasteful number, since it uses less digits than its factorization.

75391930655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15078386136.

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 75391930655 in words is "seventy-five billion, three hundred ninety-one million, nine hundred thirty thousand, six hundred fifty-five".