2655636513 has 4 divisors (see below), whose sum is σ = 3540848688. Its totient is φ = 1770424340.

The previous prime is 2655636509. The next prime is 2655636539. The reversal of 2655636513 is 3156365562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2655636513 - 2² = 2655636509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2655636013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442606083 + ... + 442606088.

It is an arithmetic number, because the mean of its divisors is an integer number (885212172).

Almost surely, 2^2655636513 is an apocalyptic number.

It is an amenable number.

2655636513 is a deficient number, since it is larger than the sum of its proper divisors (885212175).

2655636513 is an equidigital number, since it uses as much as digits as its factorization.

2655636513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885212174.

The product of its digits is 486000, while the sum is 42.

The square root of 2655636513 is about 51532.8682784104. The cubic root of 2655636513 is about 1384.8079361102.

The spelling of 2655636513 in words is "two billion, six hundred fifty-five million, six hundred thirty-six thousand, five hundred thirteen".