27664770192361 has 3 divisors (see below), whose sum is σ = 27664775452093. Its totient is φ = 27664764932630.

The previous prime is 27664770192277. The next prime is 27664770192401. The reversal of 27664770192361 is 16329107746672.

The square root of 27664770192361 is 5259731.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 27664770192361 - 2²³ = 27664761803753 is a prime.

It is a super-2 number, since 2×27664770192361² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27664770192361.

It is not an unprimeable number, because it can be changed into a prime (27664770192161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2629866 + ... + 7889596.

Almost surely, 2^{27664770192361} is an apocalyptic number.

27664770192361 is the 5259731-st square number.

27664770192361 is the 2629866-th centered octagonal number.

It is an amenable number.

27664770192361 is a deficient number, since it is larger than the sum of its proper divisors (5259732).

27664770192361 is an frugal number, since it uses more digits than its factorization.

27664770192361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519462 (or 5259731 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 27664770192361 in words is "twenty-seven trillion, six hundred sixty-four billion, seven hundred seventy million, one hundred ninety-two thousand, three hundred sixty-one".