2660553728900 has 36 divisors (see below), whose sum is σ = 5868047532900. Its totient is φ = 1046775235200.

The previous prime is 2660553728831. The next prime is 2660553728923. The reversal of 2660553728900 is 98273550662.

It can be written as a sum of positive squares in 6 ways, for example, as 85786895236 + 2574766833664 = 292894^2 + 1604608^2 .

It is a super-2 number, since 2×2660553728900² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218072075 + ... + 218084274.

Almost surely, 2^{2660553728900} is an apocalyptic number.

2660553728900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660553728900 is an abundant number, since it is smaller than the sum of its proper divisors (3207493804000).

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

2660553728900 is a wasteful number, since it uses less digits than its factorization.

2660553728900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436156424 (or 436156417 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 2660553728900 in words is "two trillion, six hundred sixty billion, five hundred fifty-three million, seven hundred twenty-eight thousand, nine hundred".