248706636909 has 32 divisors (see below), whose sum is σ = 348023070720. Its totient is φ = 157787649600.

The previous prime is 248706636901. The next prime is 248706636923. The reversal of 248706636909 is 909636607842.

It is not a de Polignac number, because 248706636909 - 2³ = 248706636901 is a prime.

It is a super-2 number, since 2×248706636909² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248706636901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2520154 + ... + 2616980.

It is an arithmetic number, because the mean of its divisors is an integer number (10875720960).

Almost surely, 2^248706636909 is an apocalyptic number.

It is an amenable number.

248706636909 is a deficient number, since it is larger than the sum of its proper divisors (99316433811).

248706636909 is a wasteful number, since it uses less digits than its factorization.

248706636909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97321.

The product of its (nonzero) digits is 23514624, while the sum is 60.

The spelling of 248706636909 in words is "two hundred forty-eight billion, seven hundred six million, six hundred thirty-six thousand, nine hundred nine".