6440004262626 has 32 divisors (see below), whose sum is σ = 14179825915200. Its totient is φ = 1933612620480.

The previous prime is 6440004262607. The next prime is 6440004262633. The reversal of 6440004262626 is 6262624000446.

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, 447588321 + ... + 447602708.

It is an arithmetic number, because the mean of its divisors is an integer number (443119559850).

Almost surely, 2^{6440004262626} is an apocalyptic number.

6440004262626 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6440004262626 is an abundant number, since it is smaller than the sum of its proper divisors (7739821652574).

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

6440004262626 is a wasteful number, since it uses less digits than its factorization.

6440004262626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895191154.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 6440004262626 in words is "six trillion, four hundred forty billion, four million, two hundred sixty-two thousand, six hundred twenty-six".