75197079157 has 4 divisors (see below), whose sum is σ = 75224516076. Its totient is φ = 75169642240.

The previous prime is 75197079121. The next prime is 75197079163.

75197079157 is nontrivially palindromic in base 10.

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 8612953636 + 66584125521 = 92806^2 + 258039^2 .

It is a cyclic number.

It is not a de Polignac number, because 75197079157 - 2¹⁵ = 75197046389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75197079107) 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, 13714348 + ... + 13719829.

It is an arithmetic number, because the mean of its divisors is an integer number (18806129019).

Almost surely, 2^75197079157 is an apocalyptic number.

It is an amenable number.

75197079157 is a deficient number, since it is larger than the sum of its proper divisors (27436919).

75197079157 is a wasteful number, since it uses less digits than its factorization.

75197079157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27436918.

The product of its (nonzero) digits is 4862025, while the sum is 58.

The spelling of 75197079157 in words is "seventy-five billion, one hundred ninety-seven million, seventy-nine thousand, one hundred fifty-seven".