64276772237 has 2 divisors, whose sum is σ = 64276772238. Its totient is φ = 64276772236.

The previous prime is 64276772207. The next prime is 64276772327. The reversal of 64276772237 is 73227767246.

Together with next prime (64276772327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63513576361 + 763195876 = 252019^2 + 27626^2 .

It is a cyclic number.

It is not a de Polignac number, because 64276772237 - 2¹⁰ = 64276771213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64276772207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32138386118 + 32138386119.

It is an arithmetic number, because the mean of its divisors is an integer number (32138386119).

Almost surely, 2^64276772237 is an apocalyptic number.

It is an amenable number.

64276772237 is a deficient number, since it is larger than the sum of its proper divisors (1).

64276772237 is an equidigital number, since it uses as much as digits as its factorization.

64276772237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 53.

The spelling of 64276772237 in words is "sixty-four billion, two hundred seventy-six million, seven hundred seventy-two thousand, two hundred thirty-seven".