501344275644 has 36 divisors (see below), whose sum is σ = 1267406738416. Its totient is φ = 167098958208.

The previous prime is 501344275633. The next prime is 501344275697. The reversal of 501344275644 is 446572443105.

501344275644 is a `hidden beast` number, since 5 + 0 + 134 + 427 + 56 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×501344275644³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 501344275644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269149 + ... + 1036884.

Almost surely, 2^501344275644 is an apocalyptic number.

It is an amenable number.

501344275644 is an abundant number, since it is smaller than the sum of its proper divisors (766062462772).

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

501344275644 is a wasteful number, since it uses less digits than its factorization.

501344275644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316706 (or 1316701 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 501344275644 in words is "five hundred one billion, three hundred forty-four million, two hundred seventy-five thousand, six hundred forty-four".