75312302255561 has 4 divisors (see below), whose sum is σ = 86071202577792. Its totient is φ = 64553401933332.

The previous prime is 75312302255459. The next prime is 75312302255591. The reversal of 75312302255561 is 16555220321357.

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 75312302255561 - 2¹⁸ = 75312301993417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75312302255591) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5379450161105 + ... + 5379450161118.

It is an arithmetic number, because the mean of its divisors is an integer number (21517800644448).

Almost surely, 2^{75312302255561} is an apocalyptic number.

It is an amenable number.

75312302255561 is a deficient number, since it is larger than the sum of its proper divisors (10758900322231).

75312302255561 is a wasteful number, since it uses less digits than its factorization.

75312302255561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10758900322230.

The product of its (nonzero) digits is 1890000, while the sum is 47.

The spelling of 75312302255561 in words is "seventy-five trillion, three hundred twelve billion, three hundred two million, two hundred fifty-five thousand, five hundred sixty-one".