75189898157 has 12 divisors (see below), whose sum is σ = 82771868508. Its totient is φ = 68250969600.

The previous prime is 75189898153. The next prime is 75189898181.

75189898157 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 37200379876 + 37989518281 = 192874^2 + 194909^2 .

It is not a de Polignac number, because 75189898157 - 2² = 75189898153 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 (75189898153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390068 + ... + 550029.

It is an arithmetic number, because the mean of its divisors is an integer number (6897655709).

Almost surely, 2^75189898157 is an apocalyptic number.

It is an amenable number.

75189898157 is a deficient number, since it is larger than the sum of its proper divisors (7581970351).

75189898157 is a wasteful number, since it uses less digits than its factorization.

75189898157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940780 (or 940769 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 68.

The spelling of 75189898157 in words is "seventy-five billion, one hundred eighty-nine million, eight hundred ninety-eight thousand, one hundred fifty-seven".