64898437801 has 2 divisors, whose sum is σ = 64898437802. Its totient is φ = 64898437800.

The previous prime is 64898437789. The next prime is 64898437817. The reversal of 64898437801 is 10873489846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49097696400 + 15800741401 = 221580^2 + 125701^2 .

It is a cyclic number.

It is not a de Polignac number, because 64898437801 - 2¹¹ = 64898435753 is a prime.

It is not a weakly prime, because it can be changed into another prime (64898407801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32449218900 + 32449218901.

It is an arithmetic number, because the mean of its divisors is an integer number (32449218901).

Almost surely, 2^64898437801 is an apocalyptic number.

It is an amenable number.

64898437801 is a deficient number, since it is larger than the sum of its proper divisors (1).

64898437801 is an equidigital number, since it uses as much as digits as its factorization.

64898437801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 64898437801 in words is "sixty-four billion, eight hundred ninety-eight million, four hundred thirty-seven thousand, eight hundred one".