54648678691 has 2 divisors, whose sum is σ = 54648678692. Its totient is φ = 54648678690.

The previous prime is 54648678683. The next prime is 54648678751. The reversal of 54648678691 is 19687684645.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54648678691 - 2³ = 54648678683 is a prime.

It is not a weakly prime, because it can be changed into another prime (54648678611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27324339345 + 27324339346.

It is an arithmetic number, because the mean of its divisors is an integer number (27324339346).

Almost surely, 2^54648678691 is an apocalyptic number.

54648678691 is a deficient number, since it is larger than the sum of its proper divisors (1).

54648678691 is an equidigital number, since it uses as much as digits as its factorization.

54648678691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 64.

The spelling of 54648678691 in words is "fifty-four billion, six hundred forty-eight million, six hundred seventy-eight thousand, six hundred ninety-one".