157728247287 has 32 divisors (see below), whose sum is σ = 234377041920. Its totient is φ = 93695564160.

The previous prime is 157728247273. The next prime is 157728247297. The reversal of 157728247287 is 782742827751.

It is not a de Polignac number, because 157728247287 - 2¹⁵ = 157728214519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157728247287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157728247297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315664 + ... + 644282.

It is an arithmetic number, because the mean of its divisors is an integer number (7324282560).

Almost surely, 2^157728247287 is an apocalyptic number.

157728247287 is a deficient number, since it is larger than the sum of its proper divisors (76648794633).

157728247287 is a wasteful number, since it uses less digits than its factorization.

157728247287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329063.

The product of its digits is 24586240, while the sum is 60.

The spelling of 157728247287 in words is "one hundred fifty-seven billion, seven hundred twenty-eight million, two hundred forty-seven thousand, two hundred eighty-seven".