501122613342561 has 64 divisors (see below), whose sum is σ = 768682801152000. Its totient is φ = 284462087616000.

The previous prime is 501122613342557. The next prime is 501122613342563. The reversal of 501122613342561 is 165243316221105.

It is not a de Polignac number, because 501122613342561 - 2² = 501122613342557 is a prime.

It is a super-2 number, since 2×501122613342561² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501122613342563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11613211336 + ... + 11613254486.

It is an arithmetic number, because the mean of its divisors is an integer number (12010668768000).

Almost surely, 2^{501122613342561} is an apocalyptic number.

It is an amenable number.

501122613342561 is a deficient number, since it is larger than the sum of its proper divisors (267560187809439).

501122613342561 is a wasteful number, since it uses less digits than its factorization.

501122613342561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49430.

The product of its (nonzero) digits is 259200, while the sum is 42.

Adding to 501122613342561 its reverse (165243316221105), we get a palindrome (666365929563666).

The spelling of 501122613342561 in words is "five hundred one trillion, one hundred twenty-two billion, six hundred thirteen million, three hundred forty-two thousand, five hundred sixty-one".