402860404165856 has 864 divisors, whose sum is σ = 1083113484838560. Its totient is φ = 145790668800000.

The previous prime is 402860404165853. The next prime is 402860404165867. The reversal of 402860404165856 is 658561404068204.

It is a junction number, because it is equal to n+sod(n) for n = 402860404165795 and 402860404165804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402860404165853) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 223687064156 + ... + 223687065956.

It is an arithmetic number, because the mean of its divisors is an integer number (1253603570415).

Almost surely, 2^{402860404165856} 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 402860404165856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541556742419280).

402860404165856 is an abundant number, since it is smaller than the sum of its proper divisors (680253080672704).

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

402860404165856 is a wasteful number, since it uses less digits than its factorization.

402860404165856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 59.

The spelling of 402860404165856 in words is "four hundred two trillion, eight hundred sixty billion, four hundred four million, one hundred sixty-five thousand, eight hundred fifty-six".