1366490860900 has 81 divisors (see below), whose sum is σ = 3259669770777. Its totient is φ = 496859008800.

The previous prime is 1366490860849. The next prime is 1366490860907. The reversal of 1366490860900 is 90680946631.

The square root of 1366490860900 is 1168970.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 491936709924 + 874554150976 = 701382^2 + 935176^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366490860907) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 128581387 + ... + 128592013.

Almost surely, 2^{1366490860900} is an apocalyptic number.

1366490860900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366490860900 is the 1168970-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366490860900

1366490860900 is an abundant number, since it is smaller than the sum of its proper divisors (1893178909877).

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

1366490860900 is an equidigital number, since it uses as much as digits as its factorization.

1366490860900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21290 (or 10645 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 1366490860900 in words is "one trillion, three hundred sixty-six billion, four hundred ninety million, eight hundred sixty thousand, nine hundred".