501261611212 has 24 divisors (see below), whose sum is σ = 886312521360. Its totient is φ = 248042184000.

The previous prime is 501261611141. The next prime is 501261611281. The reversal of 501261611212 is 212116162105.

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, 1432387 + ... + 1747642.

It is an arithmetic number, because the mean of its divisors is an integer number (36929688390).

Almost surely, 2^501261611212 is an apocalyptic number.

It is an amenable number.

501261611212 is a deficient number, since it is larger than the sum of its proper divisors (385050910148).

501261611212 is a wasteful number, since it uses less digits than its factorization.

501261611212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180441 (or 3180439 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 501261611212 its reverse (212116162105), we get a palindrome (713377773317).

The spelling of 501261611212 in words is "five hundred one billion, two hundred sixty-one million, six hundred eleven thousand, two hundred twelve".