1564428327001 has 2 divisors, whose sum is σ = 1564428327002. Its totient is φ = 1564428327000.

The previous prime is 1564428326887. The next prime is 1564428327013. The reversal of 1564428327001 is 1007238244651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1280258305225 + 284170021776 = 1131485^2 + 533076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1564428327001 - 2¹⁹ = 1564427802713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1564428327401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782214163500 + 782214163501.

It is an arithmetic number, because the mean of its divisors is an integer number (782214163501).

Almost surely, 2^{1564428327001} is an apocalyptic number.

It is an amenable number.

1564428327001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1564428327001 is an equidigital number, since it uses as much as digits as its factorization.

1564428327001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 1564428327001 in words is "one trillion, five hundred sixty-four billion, four hundred twenty-eight million, three hundred twenty-seven thousand, one".