464640406645 has 16 divisors (see below), whose sum is σ = 577056071088. Its totient is φ = 358907535360.

The previous prime is 464640406639. The next prime is 464640406651. The reversal of 464640406645 is 546604046464.

It is an interprime number because it is at equal distance from previous prime (464640406639) and next prime (464640406651).

It can be written as a sum of positive squares in 8 ways, for example, as 19647348561 + 444993058084 = 140169^2 + 667078^2 .

It is not a de Polignac number, because 464640406645 - 2⁵ = 464640406613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 11663304 + ... + 11703073.

It is an arithmetic number, because the mean of its divisors is an integer number (36066004443).

Almost surely, 2^464640406645 is an apocalyptic number.

It is an amenable number.

464640406645 is a deficient number, since it is larger than the sum of its proper divisors (112415664443).

464640406645 is a wasteful number, since it uses less digits than its factorization.

464640406645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23366520.

The product of its (nonzero) digits is 6635520, while the sum is 49.

The spelling of 464640406645 in words is "four hundred sixty-four billion, six hundred forty million, four hundred six thousand, six hundred forty-five".