1366052661 has 8 divisors (see below), whose sum is σ = 2023781760. Its totient is φ = 910701756.

The previous prime is 1366052657. The next prime is 1366052683. The reversal of 1366052661 is 1662506631.

1366052661 is a `hidden beast` number, since 13 + 6 + 60 + 526 + 61 = 666.

It is not a de Polignac number, because 1366052661 - 2² = 1366052657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366054661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25297245 + ... + 25297298.

It is an arithmetic number, because the mean of its divisors is an integer number (252972720).

Almost surely, 2^1366052661 is an apocalyptic number.

It is an amenable number.

1366052661 is a deficient number, since it is larger than the sum of its proper divisors (657729099).

1366052661 is an equidigital number, since it uses as much as digits as its factorization.

1366052661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50594552 (or 50594546 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1366052661 is about 36960.1496344374. The cubic root of 1366052661 is about 1109.5728305171.

The spelling of 1366052661 in words is "one billion, three hundred sixty-six million, fifty-two thousand, six hundred sixty-one".