501057215663 has 4 divisors (see below), whose sum is σ = 502018938288. Its totient is φ = 500095493040.

The previous prime is 501057215653. The next prime is 501057215669. The reversal of 501057215663 is 366512750105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 501057215663 - 2⁴ = 501057215647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 501057215663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501057215669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480860531 + ... + 480861572.

It is an arithmetic number, because the mean of its divisors is an integer number (125504734572).

Almost surely, 2^501057215663 is an apocalyptic number.

501057215663 is a deficient number, since it is larger than the sum of its proper divisors (961722625).

501057215663 is an equidigital number, since it uses as much as digits as its factorization.

501057215663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961722624.

The product of its (nonzero) digits is 189000, while the sum is 41.

Adding to 501057215663 its reverse (366512750105), we get a palindrome (867569965768).

The spelling of 501057215663 in words is "five hundred one billion, fifty-seven million, two hundred fifteen thousand, six hundred sixty-three".