8012561487 has 48 divisors (see below), whose sum is σ = 12691187712. Its totient is φ = 4482233280.

The previous prime is 8012561441. The next prime is 8012561527. The reversal of 8012561487 is 7841652108.

It is not a de Polignac number, because 8012561487 - 2¹⁴ = 8012545103 is a prime.

It is a super-2 number, since 2×8012561487² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8012561437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1997638 + ... + 2001644.

It is an arithmetic number, because the mean of its divisors is an integer number (264399744).

Almost surely, 2^8012561487 is an apocalyptic number.

8012561487 is a deficient number, since it is larger than the sum of its proper divisors (4678626225).

8012561487 is a wasteful number, since it uses less digits than its factorization.

8012561487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308 (or 4301 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 8012561487 is about 89512.9124037421. The cubic root of 8012561487 is about 2001.0462431755.

The spelling of 8012561487 in words is "eight billion, twelve million, five hundred sixty-one thousand, four hundred eighty-seven".