2587456641 has 16 divisors (see below), whose sum is σ = 4301227008. Its totient is φ = 1344133200.

The previous prime is 2587456639. The next prime is 2587456693. The reversal of 2587456641 is 1466547852.

It is not a de Polignac number, because 2587456641 - 2¹ = 2587456639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2587456601) 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, 5600325 + ... + 5600786.

It is an arithmetic number, because the mean of its divisors is an integer number (268826688).

Almost surely, 2^2587456641 is an apocalyptic number.

2587456641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2587456641 is a deficient number, since it is larger than the sum of its proper divisors (1713770367).

2587456641 is a wasteful number, since it uses less digits than its factorization.

2587456641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201132.

The product of its digits is 1612800, while the sum is 48.

The square root of 2587456641 is about 50867.0486759356. The cubic root of 2587456641 is about 1372.8540217015.

The spelling of 2587456641 in words is "two billion, five hundred eighty-seven million, four hundred fifty-six thousand, six hundred forty-one".