157474509728 has 24 divisors (see below), whose sum is σ = 310318025220. Its totient is φ = 78663582720.

The previous prime is 157474509727. The next prime is 157474509763. The reversal of 157474509728 is 827905474751.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 138970892944 + 18503616784 = 372788^2 + 136028^2 .

It is not an unprimeable number, because it can be changed into a prime (157474509721) 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, 2267513 + ... + 2335928.

Almost surely, 2^157474509728 is an apocalyptic number.

It is an amenable number.

157474509728 is a deficient number, since it is larger than the sum of its proper divisors (152843515492).

157474509728 is a wasteful number, since it uses less digits than its factorization.

157474509728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604520 (or 4604512 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 59.

The spelling of 157474509728 in words is "one hundred fifty-seven billion, four hundred seventy-four million, five hundred nine thousand, seven hundred twenty-eight".