402857447664 has 160 divisors (see below), whose sum is σ = 1204332917760. Its totient is φ = 113659324416.

The previous prime is 402857447653. The next prime is 402857447711. The reversal of 402857447664 is 466744758204.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 23825037 + ... + 23841939.

It is an arithmetic number, because the mean of its divisors is an integer number (7527080736).

Almost surely, 2^402857447664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402857447664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602166458880).

402857447664 is an abundant number, since it is smaller than the sum of its proper divisors (801475470096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402857447664 is a wasteful number, since it uses less digits than its factorization.

402857447664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17807 (or 17801 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 57.

The spelling of 402857447664 in words is "four hundred two billion, eight hundred fifty-seven million, four hundred forty-seven thousand, six hundred sixty-four".