27196623551 has 4 divisors (see below), whose sum is σ = 27569180112. Its totient is φ = 26824066992.

The previous prime is 27196623533. The next prime is 27196623569. The reversal of 27196623551 is 15532669172.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (27196623533) and next prime (27196623569).

It is a cyclic number.

It is not a de Polignac number, because 27196623551 - 2¹⁴ = 27196607167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27196623496 and 27196623505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27196620551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186278171 + ... + 186278316.

It is an arithmetic number, because the mean of its divisors is an integer number (6892295028).

Almost surely, 2^27196623551 is an apocalyptic number.

27196623551 is a deficient number, since it is larger than the sum of its proper divisors (372556561).

27196623551 is an equidigital number, since it uses as much as digits as its factorization.

27196623551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372556560.

The product of its digits is 680400, while the sum is 47.

The spelling of 27196623551 in words is "twenty-seven billion, one hundred ninety-six million, six hundred twenty-three thousand, five hundred fifty-one".