501040151281 has 2 divisors, whose sum is σ = 501040151282. Its totient is φ = 501040151280.

The previous prime is 501040151267. The next prime is 501040151303. The reversal of 501040151281 is 182151040105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374104712881 + 126935438400 = 611641^2 + 356280^2 .

It is a cyclic number.

It is not a de Polignac number, because 501040151281 - 2⁷ = 501040151153 is a prime.

It is a super-2 number, since 2×501040151281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (501040151201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250520075640 + 250520075641.

It is an arithmetic number, because the mean of its divisors is an integer number (250520075641).

Almost surely, 2^501040151281 is an apocalyptic number.

It is an amenable number.

501040151281 is a deficient number, since it is larger than the sum of its proper divisors (1).

501040151281 is an equidigital number, since it uses as much as digits as its factorization.

501040151281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 28.

Adding to 501040151281 its reverse (182151040105), we get a palindrome (683191191386).

The spelling of 501040151281 in words is "five hundred one billion, forty million, one hundred fifty-one thousand, two hundred eighty-one".