2660823137280 has 1408 divisors, whose sum is σ = 10942391844864. Its totient is φ = 535855104000.

The previous prime is 2660823137279. The next prime is 2660823137281. The reversal of 2660823137280 is 827313280662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2660823137279) and next prime (2660823137281).

It is a tau number, because it is divible by the number of its divisors (1408).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660823137281) 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 127 ways as a sum of consecutive naturals, for example, 8393763682 + ... + 8393763998.

Almost surely, 2^{2660823137280} is an apocalyptic number.

2660823137280 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 2660823137280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5471195922432).

2660823137280 is an abundant number, since it is smaller than the sum of its proper divisors (8281568707584).

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

2660823137280 is a wasteful number, since it uses less digits than its factorization.

2660823137280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 2660823137280 in words is "two trillion, six hundred sixty billion, eight hundred twenty-three million, one hundred thirty-seven thousand, two hundred eighty".