626108985840 has 160 divisors (see below), whose sum is σ = 2095510003776. Its totient is φ = 153730621440.

The previous prime is 626108985809. The next prime is 626108985847. The reversal of 626108985840 is 48589801626.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626108985847) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 985900 + ... + 1491380.

Almost surely, 2^626108985840 is an apocalyptic number.

626108985840 is a gapful number since it is divisible by the number (60) 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 626108985840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047755001888).

626108985840 is an abundant number, since it is smaller than the sum of its proper divisors (1469401017936).

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

626108985840 is a wasteful number, since it uses less digits than its factorization.

626108985840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505907 (or 505901 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 626108985840 in words is "six hundred twenty-six billion, one hundred eight million, nine hundred eighty-five thousand, eight hundred forty".