501151522761 has 12 divisors (see below), whose sum is σ = 725557329588. Its totient is φ = 333329416704.

The previous prime is 501151522741. The next prime is 501151522829. The reversal of 501151522761 is 167225151105.

501151522761 is a `hidden beast` number, since 5 + 0 + 11 + 51 + 522 + 76 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77252867136 + 423898655625 = 277944^2 + 651075^2 .

It is not a de Polignac number, because 501151522761 - 2⁷ = 501151522633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501151522741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64295760 + ... + 64303553.

It is an arithmetic number, because the mean of its divisors is an integer number (60463110799).

Almost surely, 2^501151522761 is an apocalyptic number.

It is an amenable number.

501151522761 is a deficient number, since it is larger than the sum of its proper divisors (224405806827).

501151522761 is a wasteful number, since it uses less digits than its factorization.

501151522761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128599752 (or 128599749 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 36.

Adding to 501151522761 its reverse (167225151105), we get a palindrome (668376673866).

The spelling of 501151522761 in words is "five hundred one billion, one hundred fifty-one million, five hundred twenty-two thousand, seven hundred sixty-one".