2658266780 has 48 divisors (see below), whose sum is σ = 6042405600. Its totient is φ = 976512768.

The previous prime is 2658266747. The next prime is 2658266789. The reversal of 2658266780 is 876628562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2658266789) 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 15 ways as a sum of consecutive naturals, for example, 25271 + ... + 77169.

It is an arithmetic number, because the mean of its divisors is an integer number (125883450).

Almost surely, 2^2658266780 is an apocalyptic number.

2658266780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2658266780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3021202800).

2658266780 is an abundant number, since it is smaller than the sum of its proper divisors (3384138820).

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

2658266780 is a wasteful number, since it uses less digits than its factorization.

2658266780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52118 (or 52116 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 2658266780 is about 51558.3822477005. The cubic root of 2658266780 is about 1385.2649781690.

The spelling of 2658266780 in words is "two billion, six hundred fifty-eight million, two hundred sixty-six thousand, seven hundred eighty".