136566463401 has 21 divisors (see below), whose sum is σ = 204770989101. Its totient is φ = 91037657052.

The previous prime is 136566463399. The next prime is 136566463417. The reversal of 136566463401 is 104364665631.

The square root of 136566463401 is 369549.

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

136566463401 is a `hidden beast` number, since 1 + 3 + 6 + 5 + 6 + 6 + 4 + 634 + 0 + 1 = 666.

It is not a de Polignac number, because 136566463401 - 2¹ = 136566463399 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (136566463441) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 9970980 + ... + 9984666.

It is an arithmetic number, because the mean of its divisors is an integer number (9750999481).

Almost surely, 2^136566463401 is an apocalyptic number.

136566463401 is the 369549-th square number.

136566463401 is the 184775-th centered octagonal number.

It is an amenable number.

136566463401 is a deficient number, since it is larger than the sum of its proper divisors (68204525700).

136566463401 is an frugal number, since it uses more digits than its factorization.

136566463401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27392 (or 13690 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 136566463401 in words is "one hundred thirty-six billion, five hundred sixty-six million, four hundred sixty-three thousand, four hundred one".