64854196742501 has 2 divisors, whose sum is σ = 64854196742502. Its totient is φ = 64854196742500.

The previous prime is 64854196742483. The next prime is 64854196742551. The reversal of 64854196742501 is 10524769145846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41473587120001 + 23380609622500 = 6439999^2 + 4835350^2 .

It is a cyclic number.

It is not a de Polignac number, because 64854196742501 - 2¹⁴ = 64854196726117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64854196742551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32427098371250 + 32427098371251.

It is an arithmetic number, because the mean of its divisors is an integer number (32427098371251).

Almost surely, 2^{64854196742501} is an apocalyptic number.

It is an amenable number.

64854196742501 is a deficient number, since it is larger than the sum of its proper divisors (1).

64854196742501 is an equidigital number, since it uses as much as digits as its factorization.

64854196742501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 64854196742501 in words is "sixty-four trillion, eight hundred fifty-four billion, one hundred ninety-six million, seven hundred forty-two thousand, five hundred one".