2668639050 has 144 divisors (see below), whose sum is σ = 8939017152. Its totient is φ = 554515200.

The previous prime is 2668639049. The next prime is 2668639067. The reversal of 2668639050 is 509368662.

It is a happy number.

2668639050 is a `hidden beast` number, since 2 + 6 + 6 + 8 + 639 + 0 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2668638987 and 2668639005.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3859 + ... + 73158.

It is an arithmetic number, because the mean of its divisors is an integer number (62076508).

Almost surely, 2^2668639050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2668639050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4469508576).

2668639050 is an abundant number, since it is smaller than the sum of its proper divisors (6270378102).

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

2668639050 is a wasteful number, since it uses less digits than its factorization.

2668639050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77053 (or 77045 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 2668639050 is about 51658.8719389032. The cubic root of 2668639050 is about 1387.0643579981.

The spelling of 2668639050 in words is "two billion, six hundred sixty-eight million, six hundred thirty-nine thousand, fifty".