2420642200640 has 28 divisors (see below), whose sum is σ = 5764154241036. Its totient is φ = 968256880128.

The previous prime is 2420642200621. The next prime is 2420642200657. The reversal of 2420642200640 is 460022460242.

It can be written as a sum of positive squares in 2 ways, for example, as 894053455936 + 1526588744704 = 945544^2 + 1235552^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2420642200597 and 2420642200606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3782253119 + ... + 3782253758.

Almost surely, 2^{2420642200640} is an apocalyptic number.

2420642200640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2420642200640 is an abundant number, since it is smaller than the sum of its proper divisors (3343512040396).

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

2420642200640 is an equidigital number, since it uses as much as digits as its factorization.

2420642200640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7564506894 (or 7564506884 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 2420642200640 its reverse (460022460242), we get a palindrome (2880664660882).

The spelling of 2420642200640 in words is "two trillion, four hundred twenty billion, six hundred forty-two million, two hundred thousand, six hundred forty".