2567949651 has 6 divisors (see below), whose sum is σ = 3709260620. Its totient is φ = 1711966428.

The previous prime is 2567949649. The next prime is 2567949661. The reversal of 2567949651 is 1569497652.

It is not a de Polignac number, because 2567949651 - 2¹ = 2567949649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2567949611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142663861 + ... + 142663878.

Almost surely, 2^2567949651 is an apocalyptic number.

2567949651 is a deficient number, since it is larger than the sum of its proper divisors (1141310969).

2567949651 is a wasteful number, since it uses less digits than its factorization.

2567949651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285327745 (or 285327742 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 2567949651 is about 50674.9410557131. The cubic root of 2567949651 is about 1369.3953058019.

The spelling of 2567949651 in words is "two billion, five hundred sixty-seven million, nine hundred forty-nine thousand, six hundred fifty-one".