402645242560 has 224 divisors, whose sum is σ = 1061865288000. Its totient is φ = 144205824000.

The previous prime is 402645242557. The next prime is 402645242567. The reversal of 402645242560 is 65242546204.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (402645242567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70034566 + ... + 70040314.

Almost surely, 2^402645242560 is an apocalyptic number.

402645242560 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 402645242560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530932644000).

402645242560 is an abundant number, since it is smaller than the sum of its proper divisors (659220045440).

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

402645242560 is a wasteful number, since it uses less digits than its factorization.

402645242560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6075 (or 6065 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 402645242560 its reverse (65242546204), we get a palindrome (467887788764).

The spelling of 402645242560 in words is "four hundred two billion, six hundred forty-five million, two hundred forty-two thousand, five hundred sixty".