501378884457 has 32 divisors (see below), whose sum is σ = 751903426944. Its totient is φ = 294502809600.

The previous prime is 501378884453. The next prime is 501378884497. The reversal of 501378884457 is 754488873105.

It is not a de Polignac number, because 501378884457 - 2² = 501378884453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501378884457.

It is not an unprimeable number, because it can be changed into a prime (501378884453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485094 + ... + 1112687.

It is an arithmetic number, because the mean of its divisors is an integer number (23496982092).

Almost surely, 2^501378884457 is an apocalyptic number.

It is an amenable number.

501378884457 is a deficient number, since it is larger than the sum of its proper divisors (250524542487).

501378884457 is a wasteful number, since it uses less digits than its factorization.

501378884457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598089.

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 501378884457 in words is "five hundred one billion, three hundred seventy-eight million, eight hundred eighty-four thousand, four hundred fifty-seven".