75472741345 has 4 divisors (see below), whose sum is σ = 90567289620. Its totient is φ = 60378193072.

The previous prime is 75472741321. The next prime is 75472741363. The reversal of 75472741345 is 54314727457.

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 19799866944 + 55672874401 = 140712^2 + 235951^2 .

It is a cyclic number.

It is not a de Polignac number, because 75472741345 - 2⁵ = 75472741313 is a prime.

It is a super-2 number, since 2×75472741345² (a number of 23 digits) contains 22 as substring.

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, 7547274130 + ... + 7547274139.

It is an arithmetic number, because the mean of its divisors is an integer number (22641822405).

Almost surely, 2^75472741345 is an apocalyptic number.

It is an amenable number.

75472741345 is a deficient number, since it is larger than the sum of its proper divisors (15094548275).

75472741345 is a wasteful number, since it uses less digits than its factorization.

75472741345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094548274.

The product of its digits is 3292800, while the sum is 49.

The spelling of 75472741345 in words is "seventy-five billion, four hundred seventy-two million, seven hundred forty-one thousand, three hundred forty-five".