64548457837 has 2 divisors, whose sum is σ = 64548457838. Its totient is φ = 64548457836.

The previous prime is 64548457817. The next prime is 64548457859. The reversal of 64548457837 is 73875484546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46599425161 + 17949032676 = 215869^2 + 133974^2 .

It is a cyclic number.

It is not a de Polignac number, because 64548457837 - 2¹¹ = 64548455789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64548457817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32274228918 + 32274228919.

It is an arithmetic number, because the mean of its divisors is an integer number (32274228919).

Almost surely, 2^64548457837 is an apocalyptic number.

It is an amenable number.

64548457837 is a deficient number, since it is larger than the sum of its proper divisors (1).

64548457837 is an equidigital number, since it uses as much as digits as its factorization.

64548457837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90316800, while the sum is 61.

The spelling of 64548457837 in words is "sixty-four billion, five hundred forty-eight million, four hundred fifty-seven thousand, eight hundred thirty-seven".