2666738550 has 96 divisors (see below), whose sum is σ = 7636511232. Its totient is φ = 603233280.

The previous prime is 2666738537. The next prime is 2666738561. The reversal of 2666738550 is 558376662.

It is a super-2 number, since 2×2666738550² = 14222988988112205000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666738550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88759 + ... + 114941.

It is an arithmetic number, because the mean of its divisors is an integer number (79546992).

Almost surely, 2^2666738550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666738550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3818255616).

2666738550 is an abundant number, since it is smaller than the sum of its proper divisors (4969772682).

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

2666738550 is a wasteful number, since it uses less digits than its factorization.

2666738550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26302 (or 26297 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 2666738550 is about 51640.4739521240. The cubic root of 2666738550 is about 1386.7350088692.

The spelling of 2666738550 in words is "two billion, six hundred sixty-six million, seven hundred thirty-eight thousand, five hundred fifty".