64537080991037 has 2 divisors, whose sum is σ = 64537080991038. Its totient is φ = 64537080991036.

The previous prime is 64537080991003. The next prime is 64537080991073. The reversal of 64537080991037 is 73019908073546.

Together with next prime (64537080991073) 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., 54474348694276 + 10062732296761 = 7380674^2 + 3172181^2 .

It is a cyclic number.

It is not a de Polignac number, because 64537080991037 - 2¹² = 64537080986941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64537080991837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32268540495518 + 32268540495519.

It is an arithmetic number, because the mean of its divisors is an integer number (32268540495519).

Almost surely, 2^{64537080991037} is an apocalyptic number.

It is an amenable number.

64537080991037 is a deficient number, since it is larger than the sum of its proper divisors (1).

64537080991037 is an equidigital number, since it uses as much as digits as its factorization.

64537080991037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 64537080991037 in words is "sixty-four trillion, five hundred thirty-seven billion, eighty million, nine hundred ninety-one thousand, thirty-seven".