75465891109 has 4 divisors (see below), whose sum is σ = 86246732704. Its totient is φ = 64685049516.

The previous prime is 75465891013. The next prime is 75465891113. The reversal of 75465891109 is 90119856457.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90119856457 = 32693 ⋅2756549.

It is a cyclic number.

It is not a de Polignac number, because 75465891109 - 2¹⁷ = 75465760037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75465891109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75465891119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390420787 + ... + 5390420800.

It is an arithmetic number, because the mean of its divisors is an integer number (21561683176).

Almost surely, 2^75465891109 is an apocalyptic number.

It is an amenable number.

75465891109 is a deficient number, since it is larger than the sum of its proper divisors (10780841595).

75465891109 is a wasteful number, since it uses less digits than its factorization.

75465891109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780841594.

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 75465891109 in words is "seventy-five billion, four hundred sixty-five million, eight hundred ninety-one thousand, one hundred nine".