501381126485 has 16 divisors (see below), whose sum is σ = 603015849072. Its totient is φ = 400200192000.

The previous prime is 501381126451. The next prime is 501381126523. The reversal of 501381126485 is 584621183105.

It can be written as a sum of positive squares in 8 ways, for example, as 23571153841 + 477809972644 = 153529^2 + 691238^2 .

It is not a de Polignac number, because 501381126485 - 2¹⁰ = 501381125461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206815 + ... + 4324355.

It is an arithmetic number, because the mean of its divisors is an integer number (37688490567).

Almost surely, 2^501381126485 is an apocalyptic number.

It is an amenable number.

501381126485 is a deficient number, since it is larger than the sum of its proper divisors (101634722587).

501381126485 is a wasteful number, since it uses less digits than its factorization.

501381126485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119464.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 501381126485 in words is "five hundred one billion, three hundred eighty-one million, one hundred twenty-six thousand, four hundred eighty-five".