402881035648 has 192 divisors, whose sum is σ = 1009238771520. Its totient is φ = 158784675840.

The previous prime is 402881035619. The next prime is 402881035691. The reversal of 402881035648 is 846530188204.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22087140 + ... + 22105372.

It is an arithmetic number, because the mean of its divisors is an integer number (5256451935).

Almost surely, 2^402881035648 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 402881035648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504619385760).

402881035648 is an abundant number, since it is smaller than the sum of its proper divisors (606357735872).

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

402881035648 is a wasteful number, since it uses less digits than its factorization.

402881035648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545 (or 18526 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 402881035648 in words is "four hundred two billion, eight hundred eighty-one million, thirty-five thousand, six hundred forty-eight".