2661476858880 has 352 divisors, whose sum is σ = 9735635234304. Its totient is φ = 607900729344.

The previous prime is 2661476858861. The next prime is 2661476858881. The reversal of 2661476858880 is 888586741662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661476858881) 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 31 ways as a sum of consecutive naturals, for example, 163744834 + ... + 163761086.

Almost surely, 2^{2661476858880} is an apocalyptic number.

2661476858880 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 2661476858880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4867817617152).

2661476858880 is an abundant number, since it is smaller than the sum of its proper divisors (7074158375424).

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

2661476858880 is a wasteful number, since it uses less digits than its factorization.

2661476858880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17811 (or 17793 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 69.

The spelling of 2661476858880 in words is "two trillion, six hundred sixty-one billion, four hundred seventy-six million, eight hundred fifty-eight thousand, eight hundred eighty".