32155649551 has 2 divisors, whose sum is σ = 32155649552. Its totient is φ = 32155649550.

The previous prime is 32155649543. The next prime is 32155649593. The reversal of 32155649551 is 15594655123.

It is a weak prime.

It is an emirp because it is prime and its reverse (15594655123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32155649551 - 2³ = 32155649543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32155640551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16077824775 + 16077824776.

It is an arithmetic number, because the mean of its divisors is an integer number (16077824776).

Almost surely, 2^32155649551 is an apocalyptic number.

32155649551 is a deficient number, since it is larger than the sum of its proper divisors (1).

32155649551 is an equidigital number, since it uses as much as digits as its factorization.

32155649551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810000, while the sum is 46.

The spelling of 32155649551 in words is "thirty-two billion, one hundred fifty-five million, six hundred forty-nine thousand, five hundred fifty-one".