157444894287 has 20 divisors (see below), whose sum is σ = 235211364696. Its totient is φ = 104956164720.

The previous prime is 157444894261. The next prime is 157444894291. The reversal of 157444894287 is 782498444751.

157444894287 is a `hidden beast` number, since 1 + 5 + 74 + 4 + 489 + 4 + 2 + 87 = 666.

157444894287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157444894287 - 2¹² = 157444890191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157444892287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1318228 + ... + 1432694.

Almost surely, 2^157444894287 is an apocalyptic number.

157444894287 is a deficient number, since it is larger than the sum of its proper divisors (77766470409).

157444894287 is a wasteful number, since it uses less digits than its factorization.

157444894287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131460 (or 131451 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The spelling of 157444894287 in words is "one hundred fifty-seven billion, four hundred forty-four million, eight hundred ninety-four thousand, two hundred eighty-seven".