2663403231660 has 96 divisors (see below), whose sum is σ = 7599272990400. Its totient is φ = 696801315840.

The previous prime is 2663403231659. The next prime is 2663403231673. The reversal of 2663403231660 is 661323043662.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488386 + ... + 2359094.

It is an arithmetic number, because the mean of its divisors is an integer number (79159093650).

Almost surely, 2^{2663403231660} is an apocalyptic number.

2663403231660 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 2663403231660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799636495200).

2663403231660 is an abundant number, since it is smaller than the sum of its proper divisors (4935869758740).

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

2663403231660 is a wasteful number, since it uses less digits than its factorization.

2663403231660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871171 (or 1871169 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 42.

The spelling of 2663403231660 in words is "two trillion, six hundred sixty-three billion, four hundred three million, two hundred thirty-one thousand, six hundred sixty".