2649260930868 has 288 divisors, whose sum is σ = 7115627151360. Its totient is φ = 829971567360.

The previous prime is 2649260930861. The next prime is 2649260930881. The reversal of 2649260930868 is 8680390629462.

2649260930868 is a `hidden beast` number, since 2 + 6 + 4 + 9 + 260 + 9 + 308 + 68 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649260930861) 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 95 ways as a sum of consecutive naturals, for example, 2026977871 + ... + 2026979177.

It is an arithmetic number, because the mean of its divisors is an integer number (24707038720).

Almost surely, 2^{2649260930868} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2649260930868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3557813575680).

2649260930868 is an abundant number, since it is smaller than the sum of its proper divisors (4466366220492).

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

2649260930868 is a wasteful number, since it uses less digits than its factorization.

2649260930868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 63.

The spelling of 2649260930868 in words is "two trillion, six hundred forty-nine billion, two hundred sixty million, nine hundred thirty thousand, eight hundred sixty-eight".