2651505606 has 48 divisors (see below), whose sum is σ = 6118149024. Its totient is φ = 827020032.

The previous prime is 2651505601. The next prime is 2651505617. The reversal of 2651505606 is 6065051562.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651505601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27895 + ... + 77981.

It is an arithmetic number, because the mean of its divisors is an integer number (127461438).

Almost surely, 2^2651505606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651505606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3059074512).

2651505606 is an abundant number, since it is smaller than the sum of its proper divisors (3466643418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2651505606 is a wasteful number, since it uses less digits than its factorization.

2651505606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50285 (or 50282 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2651505606 is about 51492.7723666147. The cubic root of 2651505606 is about 1384.0895293721.

The spelling of 2651505606 in words is "two billion, six hundred fifty-one million, five hundred five thousand, six hundred six".