54651332509 has 2 divisors, whose sum is σ = 54651332510. Its totient is φ = 54651332508.

The previous prime is 54651332497. The next prime is 54651332551. The reversal of 54651332509 is 90523315645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54593724409 + 57608100 = 233653^2 + 7590^2 .

It is a cyclic number.

It is not a de Polignac number, because 54651332509 - 2¹³ = 54651324317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54651332599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27325666254 + 27325666255.

It is an arithmetic number, because the mean of its divisors is an integer number (27325666255).

Almost surely, 2^54651332509 is an apocalyptic number.

It is an amenable number.

54651332509 is a deficient number, since it is larger than the sum of its proper divisors (1).

54651332509 is an equidigital number, since it uses as much as digits as its factorization.

54651332509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 54651332509 in words is "fifty-four billion, six hundred fifty-one million, three hundred thirty-two thousand, five hundred nine".