2600606551 has 4 divisors (see below), whose sum is σ = 2737480600. Its totient is φ = 2463732504.

The previous prime is 2600606549. The next prime is 2600606651. The reversal of 2600606551 is 1556060062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2600606551 - 2¹ = 2600606549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2600606651) 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, 68436996 + ... + 68437033.

It is an arithmetic number, because the mean of its divisors is an integer number (684370150).

Almost surely, 2^2600606551 is an apocalyptic number.

2600606551 is a deficient number, since it is larger than the sum of its proper divisors (136874049).

2600606551 is a wasteful number, since it uses less digits than its factorization.

2600606551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136874048.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 2600606551 is about 50996.1425109782. The cubic root of 2600606551 is about 1375.1757881699.

The spelling of 2600606551 in words is "two billion, six hundred million, six hundred six thousand, five hundred fifty-one".