6440616006126 has 16 divisors (see below), whose sum is σ = 12952399042128. Its totient is φ = 2135010830400.

The previous prime is 6440616006113. The next prime is 6440616006157. The reversal of 6440616006126 is 6216006160446.

It is a congruent number.

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, 2965291735 + ... + 2965293906.

It is an arithmetic number, because the mean of its divisors is an integer number (809524940133).

Almost surely, 2^{6440616006126} is an apocalyptic number.

6440616006126 is an abundant number, since it is smaller than the sum of its proper divisors (6511783036002).

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

6440616006126 is a wasteful number, since it uses less digits than its factorization.

6440616006126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5930585827.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 6440616006126 in words is "six trillion, four hundred forty billion, six hundred sixteen million, six thousand, one hundred twenty-six".