2664551900 has 72 divisors (see below), whose sum is σ = 6066174240. Its totient is φ = 1014496000.

The previous prime is 2664551893. The next prime is 2664551941. The reversal of 2664551900 is 91554662.

It is a super-2 number, since 2×2664551900² = 14199673655587220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 199430 + ... + 212370.

It is an arithmetic number, because the mean of its divisors is an integer number (84252420).

Almost surely, 2^2664551900 is an apocalyptic number.

2664551900 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 2664551900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3033087120).

2664551900 is an abundant number, since it is smaller than the sum of its proper divisors (3401622340).

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

2664551900 is a wasteful number, since it uses less digits than its factorization.

2664551900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055 (or 13048 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 2664551900 is about 51619.2977480322. The cubic root of 2664551900 is about 1386.3558774284.

The spelling of 2664551900 in words is "two billion, six hundred sixty-four million, five hundred fifty-one thousand, nine hundred".