75124731097 has 4 divisors (see below), whose sum is σ = 80903556580. Its totient is φ = 69345905616.

The previous prime is 75124731079. The next prime is 75124731107. The reversal of 75124731097 is 79013742157.

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 26980033536 + 48144697561 = 164256^2 + 219419^2 .

It is not a de Polignac number, because 75124731097 - 2¹¹ = 75124729049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75124731007) 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, 2889412722 + ... + 2889412747.

It is an arithmetic number, because the mean of its divisors is an integer number (20225889145).

Almost surely, 2^75124731097 is an apocalyptic number.

It is an amenable number.

75124731097 is a deficient number, since it is larger than the sum of its proper divisors (5778825483).

75124731097 is a wasteful number, since it uses less digits than its factorization.

75124731097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778825482.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 75124731097 in words is "seventy-five billion, one hundred twenty-four million, seven hundred thirty-one thousand, ninety-seven".