506538721101 has 16 divisors (see below), whose sum is σ = 772146566784. Its totient is φ = 289346433024.

The previous prime is 506538721097. The next prime is 506538721123. The reversal of 506538721101 is 101127835605.

It is not a de Polignac number, because 506538721101 - 2² = 506538721097 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 506538721101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506538721151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4284660 + ... + 4401293.

It is an arithmetic number, because the mean of its divisors is an integer number (48259160424).

Almost surely, 2^506538721101 is an apocalyptic number.

It is an amenable number.

506538721101 is a deficient number, since it is larger than the sum of its proper divisors (265607845683).

506538721101 is a wasteful number, since it uses less digits than its factorization.

506538721101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8688740.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 506538721101 in words is "five hundred six billion, five hundred thirty-eight million, seven hundred twenty-one thousand, one hundred one".