264331641621345 has 16 divisors (see below), whose sum is σ = 422930849740800. Its totient is φ = 140976801149184.

The previous prime is 264331641621337. The next prime is 264331641621353. The reversal of 264331641621345 is 543126146133462.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (264331641621337) and next prime (264331641621353).

It is not a de Polignac number, because 264331641621345 - 2³ = 264331641621337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36447456 + ... + 43093854.

It is an arithmetic number, because the mean of its divisors is an integer number (26433178108800).

Almost surely, 2^{264331641621345} is an apocalyptic number.

It is an amenable number.

264331641621345 is a deficient number, since it is larger than the sum of its proper divisors (158599208119455).

264331641621345 is a wasteful number, since it uses less digits than its factorization.

264331641621345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297784.

The product of its digits is 7464960, while the sum is 51.

The spelling of 264331641621345 in words is "two hundred sixty-four trillion, three hundred thirty-one billion, six hundred forty-one million, six hundred twenty-one thousand, three hundred forty-five".