75500377661 has 4 divisors (see below), whose sum is σ = 75602544000. Its totient is φ = 75398211324.

The previous prime is 75500377627. The next prime is 75500377669. The reversal of 75500377661 is 16677300557.

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 75500377661 - 2⁶ = 75500377597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75500377669) 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, 51082061 + ... + 51083538.

It is an arithmetic number, because the mean of its divisors is an integer number (18900636000).

Almost surely, 2^75500377661 is an apocalyptic number.

It is an amenable number.

75500377661 is a deficient number, since it is larger than the sum of its proper divisors (102166339).

75500377661 is a wasteful number, since it uses less digits than its factorization.

75500377661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102166338.

The product of its (nonzero) digits is 926100, while the sum is 47.

The spelling of 75500377661 in words is "seventy-five billion, five hundred million, three hundred seventy-seven thousand, six hundred sixty-one".