75145190345 has 4 divisors (see below), whose sum is σ = 90174228420. Its totient is φ = 60116152272.

The previous prime is 75145190297. The next prime is 75145190357. The reversal of 75145190345 is 54309154157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54309154157 = 1481 ⋅36670597.

It can be written as a sum of positive squares in 2 ways, for example, as 25385411584 + 49759778761 = 159328^2 + 223069^2 .

It is a cyclic number.

It is not a de Polignac number, because 75145190345 - 2³² = 70850223049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75145190296 and 75145190305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7514519030 + ... + 7514519039.

It is an arithmetic number, because the mean of its divisors is an integer number (22543557105).

Almost surely, 2^75145190345 is an apocalyptic number.

It is an amenable number.

75145190345 is a deficient number, since it is larger than the sum of its proper divisors (15029038075).

75145190345 is a wasteful number, since it uses less digits than its factorization.

75145190345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15029038074.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 75145190345 in words is "seventy-five billion, one hundred forty-five million, one hundred ninety thousand, three hundred forty-five".