2666503000 has 64 divisors (see below), whose sum is σ = 7131009600. Its totient is φ = 914227200.

The previous prime is 2666502983. The next prime is 2666503001. The reversal of 2666503000 is 3056662.

It is a super-2 number, since 2×2666503000² = 14220476498018000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2666503000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666503001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183465 + ... + 197464.

It is an arithmetic number, because the mean of its divisors is an integer number (111422025).

Almost surely, 2^2666503000 is an apocalyptic number.

2666503000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666503000 is an abundant number, since it is smaller than the sum of its proper divisors (4464506600).

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

2666503000 is a wasteful number, since it uses less digits than its factorization.

2666503000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380957 (or 380943 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2666503000 is about 51638.1932294305. The cubic root of 2666503000 is about 1386.6941780887.

Adding to 2666503000 its reverse (3056662), we get a palindrome (2669559662).

The spelling of 2666503000 in words is "two billion, six hundred sixty-six million, five hundred three thousand".