6424641223240 has 64 divisors (see below), whose sum is σ = 14684843496960. Its totient is φ = 2529224916480.

The previous prime is 6424641223199. The next prime is 6424641223321. The reversal of 6424641223240 is 423221464246.

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

It is a junction number, because it is equal to n+sod(n) for n = 6424641223193 and 6424641223202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992056 + ... + 3719335.

It is an arithmetic number, because the mean of its divisors is an integer number (229450679640).

Almost surely, 2^{6424641223240} is an apocalyptic number.

It is an amenable number.

6424641223240 is an abundant number, since it is smaller than the sum of its proper divisors (8260202273720).

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

6424641223240 is a wasteful number, since it uses less digits than its factorization.

6424641223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711942 (or 4711938 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

Adding to 6424641223240 its reverse (423221464246), we get a palindrome (6847862687486).

The spelling of 6424641223240 in words is "six trillion, four hundred twenty-four billion, six hundred forty-one million, two hundred twenty-three thousand, two hundred forty".