264466155606557 has 2 divisors, whose sum is σ = 264466155606558. Its totient is φ = 264466155606556.

The previous prime is 264466155606551. The next prime is 264466155606607. The reversal of 264466155606557 is 755606551664462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250043979702841 + 14422175903716 = 15812779^2 + 3797654^2 .

It is a cyclic number.

It is not a de Polignac number, because 264466155606557 - 2⁶ = 264466155606493 is a prime.

It is a super-2 number, since 2×264466155606557² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264466155606551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132233077803278 + 132233077803279.

It is an arithmetic number, because the mean of its divisors is an integer number (132233077803279).

Almost surely, 2^{264466155606557} is an apocalyptic number.

It is an amenable number.

264466155606557 is a deficient number, since it is larger than the sum of its proper divisors (1).

264466155606557 is an equidigital number, since it uses as much as digits as its factorization.

264466155606557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640000, while the sum is 68.

The spelling of 264466155606557 in words is "two hundred sixty-four trillion, four hundred sixty-six billion, one hundred fifty-five million, six hundred six thousand, five hundred fifty-seven".