8461537287 has 16 divisors (see below), whose sum is σ = 12895567872. Its totient is φ = 4834490400.

The previous prime is 8461537283. The next prime is 8461537303. The reversal of 8461537287 is 7827351648.

It is not a de Polignac number, because 8461537287 - 2² = 8461537283 is a prime.

It is a super-2 number, since 2×8461537287² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461537283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153537 + ... + 201237.

It is an arithmetic number, because the mean of its divisors is an integer number (805972992).

Almost surely, 2^8461537287 is an apocalyptic number.

8461537287 is a deficient number, since it is larger than the sum of its proper divisors (4434030585).

8461537287 is a wasteful number, since it uses less digits than its factorization.

8461537287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56158.

The product of its digits is 2257920, while the sum is 51.

The square root of 8461537287 is about 91986.6147164901. The cubic root of 8461537287 is about 2037.7446309057.

The spelling of 8461537287 in words is "eight billion, four hundred sixty-one million, five hundred thirty-seven thousand, two hundred eighty-seven".