402253324440 has 96 divisors (see below), whose sum is σ = 1326438696240. Its totient is φ = 97515953920.

The previous prime is 402253324399. The next prime is 402253324477. The reversal of 402253324440 is 44423352204.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 13837179 + ... + 13866218.

Almost surely, 2^402253324440 is an apocalyptic number.

402253324440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402253324440 is an abundant number, since it is smaller than the sum of its proper divisors (924185371800).

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

402253324440 is a wasteful number, since it uses less digits than its factorization.

402253324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27703433 (or 27703418 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 402253324440 its reverse (44423352204), we get a palindrome (446676676644).

The spelling of 402253324440 in words is "four hundred two billion, two hundred fifty-three million, three hundred twenty-four thousand, four hundred forty".