487896281991 has 12 divisors (see below), whose sum is σ = 704830805640. Its totient is φ = 325221850320.

The previous prime is 487896281941. The next prime is 487896282001. The reversal of 487896281991 is 199182698784.

487896281991 is a `hidden beast` number, since 487 + 8 + 9 + 62 + 81 + 9 + 9 + 1 = 666.

487896281991 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 487896281991 - 2⁶ = 487896281927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487896281941) 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, 3455076 + ... + 3593513.

It is an arithmetic number, because the mean of its divisors is an integer number (58735900470).

Almost surely, 2^487896281991 is an apocalyptic number.

487896281991 is a deficient number, since it is larger than the sum of its proper divisors (216934523649).

487896281991 is a wasteful number, since it uses less digits than its factorization.

487896281991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056286 (or 7056283 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 72.

The spelling of 487896281991 in words is "four hundred eighty-seven billion, eight hundred ninety-six million, two hundred eighty-one thousand, nine hundred ninety-one".