501616352421407 has 2 divisors, whose sum is σ = 501616352421408. Its totient is φ = 501616352421406.

The previous prime is 501616352421313. The next prime is 501616352421469. The reversal of 501616352421407 is 704124253616105.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 501616352421407 - 2²⁰ = 501616351372831 is a prime.

It is a super-2 number, since 2×501616352421407² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501616352421487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250808176210703 + 250808176210704.

It is an arithmetic number, because the mean of its divisors is an integer number (250808176210704).

Almost surely, 2^{501616352421407} is an apocalyptic number.

501616352421407 is a deficient number, since it is larger than the sum of its proper divisors (1).

501616352421407 is an equidigital number, since it uses as much as digits as its factorization.

501616352421407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 501616352421407 in words is "five hundred one trillion, six hundred sixteen billion, three hundred fifty-two million, four hundred twenty-one thousand, four hundred seven".