6420626246064 has 40 divisors (see below), whose sum is σ = 16648278125040. Its totient is φ = 2132252578048.

The previous prime is 6420626246039. The next prime is 6420626246077. The reversal of 6420626246064 is 4606426260246.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248617287 + ... + 248643110.

It is an arithmetic number, because the mean of its divisors is an integer number (416206953126).

Almost surely, 2^{6420626246064} is an apocalyptic number.

It is an amenable number.

6420626246064 is an abundant number, since it is smaller than the sum of its proper divisors (10227651878976).

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

6420626246064 is a wasteful number, since it uses less digits than its factorization.

6420626246064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497260677 (or 497260671 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 6420626246064 in words is "six trillion, four hundred twenty billion, six hundred twenty-six million, two hundred forty-six thousand, sixty-four".