2651871726660 has 576 divisors, whose sum is σ = 8641387238400. Its totient is φ = 603797815296.

The previous prime is 2651871726659. The next prime is 2651871726667. The reversal of 2651871726660 is 666271781562.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 2651871726660.

It is not an unprimeable number, because it can be changed into a prime (2651871726667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2157746926 + ... + 2157748154.

It is an arithmetic number, because the mean of its divisors is an integer number (15002408400).

Almost surely, 2^{2651871726660} is an apocalyptic number.

2651871726660 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 2651871726660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4320693619200).

2651871726660 is an abundant number, since it is smaller than the sum of its proper divisors (5989515511740).

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

2651871726660 is a wasteful number, since it uses less digits than its factorization.

2651871726660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 2651871726660 in words is "two trillion, six hundred fifty-one billion, eight hundred seventy-one million, seven hundred twenty-six thousand, six hundred sixty".