402533663280 has 480 divisors, whose sum is σ = 1505800194048. Its totient is φ = 88600780800.

The previous prime is 402533663267. The next prime is 402533663281. The reversal of 402533663280 is 82366335204.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (402533663281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 76919544 + ... + 76924776.

Almost surely, 2^402533663280 is an apocalyptic number.

402533663280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402533663280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752900097024).

402533663280 is an abundant number, since it is smaller than the sum of its proper divisors (1103266530768).

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

402533663280 is a wasteful number, since it uses less digits than its factorization.

402533663280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 402533663280 its reverse (82366335204), we get a palindrome (484899998484).

The spelling of 402533663280 in words is "four hundred two billion, five hundred thirty-three million, six hundred sixty-three thousand, two hundred eighty".