264401279801 has 2 divisors, whose sum is σ = 264401279802. Its totient is φ = 264401279800.

The previous prime is 264401279767. The next prime is 264401279921. The reversal of 264401279801 is 108972104462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159328705600 + 105072574201 = 399160^2 + 324149^2 .

It is a cyclic number.

It is not a de Polignac number, because 264401279801 - 2¹⁰ = 264401278777 is a prime.

It is not a weakly prime, because it can be changed into another prime (264401270801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132200639900 + 132200639901.

It is an arithmetic number, because the mean of its divisors is an integer number (132200639901).

Almost surely, 2^264401279801 is an apocalyptic number.

It is an amenable number.

264401279801 is a deficient number, since it is larger than the sum of its proper divisors (1).

264401279801 is an equidigital number, since it uses as much as digits as its factorization.

264401279801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 264401279801 in words is "two hundred sixty-four billion, four hundred one million, two hundred seventy-nine thousand, eight hundred one".