538106664773664 has 144 divisors (see below), whose sum is σ = 1748853471298752. Its totient is φ = 153744162614784.

The previous prime is 538106664773611. The next prime is 538106664773669. The reversal of 538106664773664 is 466377466601835.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 538106664773592 and 538106664773601.

It is not an unprimeable number, because it can be changed into a prime (538106664773669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933125802 + ... + 933702294.

It is an arithmetic number, because the mean of its divisors is an integer number (12144815772908).

Almost surely, 2^{538106664773664} is an apocalyptic number.

It is an amenable number.

538106664773664 is an abundant number, since it is smaller than the sum of its proper divisors (1210746806525088).

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

538106664773664 is a wasteful number, since it uses less digits than its factorization.

538106664773664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039519 (or 1039508 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 72.

The spelling of 538106664773664 in words is "five hundred thirty-eight trillion, one hundred six billion, six hundred sixty-four million, seven hundred seventy-three thousand, six hundred sixty-four".