663542664626010 has 256 divisors, whose sum is σ = 1786749031710720. Its totient is φ = 156598640686080.

The previous prime is 663542664625991. The next prime is 663542664626029. The reversal of 663542664626010 is 10626466245366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (663542664625991) and next prime (663542664626029).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17377941379 + ... + 17377979561.

It is an arithmetic number, because the mean of its divisors is an integer number (6979488405120).

Almost surely, 2^{663542664626010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663542664626010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893374515855360).

663542664626010 is an abundant number, since it is smaller than the sum of its proper divisors (1123206367084710).

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

663542664626010 is a wasteful number, since it uses less digits than its factorization.

663542664626010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51533.

The product of its (nonzero) digits is 44789760, while the sum is 57.

The spelling of 663542664626010 in words is "six hundred sixty-three trillion, five hundred forty-two billion, six hundred sixty-four million, six hundred twenty-six thousand, ten".