64819155601 has 2 divisors, whose sum is σ = 64819155602. Its totient is φ = 64819155600.

The previous prime is 64819155547. The next prime is 64819155617. The reversal of 64819155601 is 10655191846.

64819155601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53823536001 + 10995619600 = 231999^2 + 104860^2 .

It is a cyclic number.

It is not a de Polignac number, because 64819155601 - 2¹⁹ = 64818631313 is a prime.

It is not a weakly prime, because it can be changed into another prime (64819155631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32409577800 + 32409577801.

It is an arithmetic number, because the mean of its divisors is an integer number (32409577801).

Almost surely, 2^64819155601 is an apocalyptic number.

It is an amenable number.

64819155601 is a deficient number, since it is larger than the sum of its proper divisors (1).

64819155601 is an equidigital number, since it uses as much as digits as its factorization.

64819155601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 64819155601 in words is "sixty-four billion, eight hundred nineteen million, one hundred fifty-five thousand, six hundred one".