501111056066 has 8 divisors (see below), whose sum is σ = 751670872380. Its totient is φ = 250554098608.

The previous prime is 501111056063. The next prime is 501111056093. The reversal of 501111056066 is 660650111105.

It can be written as a sum of positive squares in 2 ways, for example, as 315595644841 + 185515411225 = 561779^2 + 430715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×501111056066² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501111056063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203321 + ... + 1021548.

Almost surely, 2^501111056066 is an apocalyptic number.

501111056066 is a deficient number, since it is larger than the sum of its proper divisors (250559816314).

501111056066 is a wasteful number, since it uses less digits than its factorization.

501111056066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429428.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 501111056066 in words is "five hundred one billion, one hundred eleven million, fifty-six thousand, sixty-six".