402348645857 has 8 divisors (see below), whose sum is σ = 402956353800. Its totient is φ = 401741261824.

The previous prime is 402348645841. The next prime is 402348645911. The reversal of 402348645857 is 758546843204.

It can be written as a sum of positive squares in 4 ways, for example, as 16414478161 + 385934167696 = 128119^2 + 621236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402348645857 - 2⁴ = 402348645841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402348645827) 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 7 ways as a sum of consecutive naturals, for example, 2465369 + ... + 2623497.

It is an arithmetic number, because the mean of its divisors is an integer number (50369544225).

Almost surely, 2^402348645857 is an apocalyptic number.

It is an amenable number.

402348645857 is a deficient number, since it is larger than the sum of its proper divisors (607707943).

402348645857 is a wasteful number, since it uses less digits than its factorization.

402348645857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161955.

The product of its (nonzero) digits is 25804800, while the sum is 56.

The spelling of 402348645857 in words is "four hundred two billion, three hundred forty-eight million, six hundred forty-five thousand, eight hundred fifty-seven".