396643792457 has 32 divisors (see below), whose sum is σ = 453972197376. Its totient is φ = 343266422400.

The previous prime is 396643792439. The next prime is 396643792471. The reversal of 396643792457 is 754297346693.

It is a de Polignac number, because none of the positive numbers 2^k-396643792457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 396643792393 and 396643792402.

It is not an unprimeable number, because it can be changed into a prime (396643792427) 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 in 31 ways as a sum of consecutive naturals, for example, 9513218 + ... + 9554820.

It is an arithmetic number, because the mean of its divisors is an integer number (14186631168).

Almost surely, 2^396643792457 is an apocalyptic number.

It is an amenable number.

396643792457 is a deficient number, since it is larger than the sum of its proper divisors (57328404919).

396643792457 is a wasteful number, since it uses less digits than its factorization.

396643792457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42101.

The product of its digits is 205752960, while the sum is 65.

The spelling of 396643792457 in words is "three hundred ninety-six billion, six hundred forty-three million, seven hundred ninety-two thousand, four hundred fifty-seven".