75043992145 has 4 divisors (see below), whose sum is σ = 90052790580. Its totient is φ = 60035193712.

The previous prime is 75043992137. The next prime is 75043992157. The reversal of 75043992145 is 54129934057.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54853855681 + 20190136464 = 234209^2 + 142092^2 .

It is a cyclic number.

It is not a de Polignac number, because 75043992145 - 2³ = 75043992137 is a prime.

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, 7504399210 + ... + 7504399219.

It is an arithmetic number, because the mean of its divisors is an integer number (22513197645).

Almost surely, 2^75043992145 is an apocalyptic number.

It is an amenable number.

75043992145 is a deficient number, since it is larger than the sum of its proper divisors (15008798435).

75043992145 is a wasteful number, since it uses less digits than its factorization.

75043992145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15008798434.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 75043992145 in words is "seventy-five billion, forty-three million, nine hundred ninety-two thousand, one hundred forty-five".