2657287081 has 24 divisors (see below), whose sum is σ = 2851678080. Its totient is φ = 2472048096.

The previous prime is 2657287079. The next prime is 2657287091. The reversal of 2657287081 is 1807827562.

It is not a de Polignac number, because 2657287081 - 2¹ = 2657287079 is a prime.

It is a super-2 number, since 2×2657287081² = 14122349261699001122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2657287001) 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 23 ways as a sum of consecutive naturals, for example, 9389566 + ... + 9389848.

It is an arithmetic number, because the mean of its divisors is an integer number (118819920).

Almost surely, 2^2657287081 is an apocalyptic number.

It is an amenable number.

2657287081 is a deficient number, since it is larger than the sum of its proper divisors (194390999).

2657287081 is an equidigital number, since it uses as much as digits as its factorization.

2657287081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 2657287081 is about 51548.8805019081. The cubic root of 2657287081 is about 1385.0947783628.

The spelling of 2657287081 in words is "two billion, six hundred fifty-seven million, two hundred eighty-seven thousand, eighty-one".